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X-Received-From: 2607:f8b0:4864:20::72e Subject: [Qemu-devel] [PULL v2 12/24] qga-win: report disk serial number X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org, =?UTF-8?q?Tom=C3=A1=C5=A1=20Golembiovsk=C3=BD?= Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) From: Tom=C3=A1=C5=A1 Golembiovsk=C3=BD Signed-off-by: Tom=C3=A1=C5=A1 Golembiovsk=C3=BD *coding style fix-ups (declarations at beginning of block) *improve readability for user-visible errors *cover additional edge-cases with debug statements Signed-off-by: Michael Roth --- qga/commands-win32.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/qga/commands-win32.c b/qga/commands-win32.c index 1e91aa2343..2d7b56d538 100644 --- a/qga/commands-win32.c +++ b/qga/commands-win32.c @@ -634,6 +634,36 @@ static void get_disk_properties(HANDLE vol_h, GuestDis= kAddress *disk, disk->bus_type =3D find_bus_type(dev_desc->BusType); g_debug("bus type %d", disk->bus_type); =20 + /* Query once more. Now with long enough buffer. */ + size =3D dev_desc->Size; + dev_desc =3D g_malloc0(size); + if (!DeviceIoControl(vol_h, IOCTL_STORAGE_QUERY_PROPERTY, &query, + sizeof(STORAGE_PROPERTY_QUERY), dev_desc, + size, &received, NULL)) { + error_setg_win32(errp, GetLastError(), "failed to get serial numbe= r"); + g_debug("failed to get serial number"); + goto out_free; + } + if (dev_desc->SerialNumberOffset > 0) { + const char *serial; + size_t len; + + if (dev_desc->SerialNumberOffset >=3D received) { + error_setg(errp, "failed to get serial number: offset outside = the buffer"); + g_debug("serial number offset outside the buffer"); + goto out_free; + } + serial =3D (char *)dev_desc + dev_desc->SerialNumberOffset; + len =3D received - dev_desc->SerialNumberOffset; + g_debug("serial number \"%s\"", serial); + if (*serial !=3D 0) { + disk->serial =3D g_strndup(serial, len); + disk->has_serial =3D true; + } + } +out_free: + g_free(dev_desc); + return; } =20 --=20 2.17.1