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| author | Kostiantyn Kostiuk <konstantin@daynix.com> | 2021-12-08 12:14:32 +0000 |
|---|---|---|
| committer | Kostiantyn Kostiuk <konstantin@daynix.com> | 2022-01-10 13:04:53 +0000 |
| commit | d919cea07c5e3506c3df7389f8d620b08c54b033 (patch) | |
| tree | 0d2c5cdbc0a20ac87df05071f5dc313ed9fe053f /qga/commands-win32.c | |
| parent | 5f22473ebb6889dab79bd0a649b9de35ad075136 (diff) | |
| download | qemu-d919cea07c5e3506c3df7389f8d620b08c54b033.zip qemu-d919cea07c5e3506c3df7389f8d620b08c54b033.tar.gz qemu-d919cea07c5e3506c3df7389f8d620b08c54b033.tar.bz2 | |
gqa-win: get_pci_info: Replace 'while' with 2 calls of the function
Microsoft suggests this solution in the documentation:
https://docs.microsoft.com/en-us/windows/win32/api/setupapi/nf-setupapi-setupdigetdeviceinterfacedetaila
Signed-off-by: Kostiantyn Kostiuk <konstantin@daynix.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
Diffstat (limited to 'qga/commands-win32.c')
| -rw-r--r-- | qga/commands-win32.c | 30 |
1 files changed, 24 insertions, 6 deletions
diff --git a/qga/commands-win32.c b/qga/commands-win32.c index 3092566..8920825 100644 --- a/qga/commands-win32.c +++ b/qga/commands-win32.c @@ -636,10 +636,10 @@ static GuestPCIAddress *get_pci_info(int number, Error **errp) if (SetupDiEnumDeviceInterfaces(dev_info, &dev_info_data, &GUID_DEVINTERFACE_DISK, 0, &dev_iface_data)) { - while (!SetupDiGetDeviceInterfaceDetail(dev_info, &dev_iface_data, - pdev_iface_detail_data, - size, &size, - &dev_info_data)) { + if (!SetupDiGetDeviceInterfaceDetail(dev_info, &dev_iface_data, + pdev_iface_detail_data, + size, &size, + &dev_info_data)) { if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) { pdev_iface_detail_data = g_malloc(size); pdev_iface_detail_data->cbSize = @@ -651,6 +651,16 @@ static GuestPCIAddress *get_pci_info(int number, Error **errp) } } + if (!SetupDiGetDeviceInterfaceDetail(dev_info, &dev_iface_data, + pdev_iface_detail_data, + size, &size, + &dev_info_data)) { + // pdev_iface_detail_data already is allocated + error_setg_win32(errp, GetLastError(), + "failed to get device interfaces"); + goto end; + } + dev_file = CreateFile(pdev_iface_detail_data->DevicePath, 0, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL); @@ -680,8 +690,8 @@ static GuestPCIAddress *get_pci_info(int number, Error **errp) ULONG dev_id_size = 0; size = 0; - while (!SetupDiGetDeviceInstanceId(dev_info, &dev_info_data, - parent_dev_id, size, &size)) { + if (!SetupDiGetDeviceInstanceId(dev_info, &dev_info_data, + parent_dev_id, size, &size)) { if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) { parent_dev_id = g_malloc(size); } else { @@ -691,6 +701,14 @@ static GuestPCIAddress *get_pci_info(int number, Error **errp) } } + if (!SetupDiGetDeviceInstanceId(dev_info, &dev_info_data, + parent_dev_id, size, &size)) { + // parent_dev_id already is allocated + error_setg_win32(errp, GetLastError(), + "failed to get device instance ID"); + goto end; + } + /* * CM API used here as opposed to * SetupDiGetDeviceProperty(..., DEVPKEY_Device_Parent, ...) |