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[Qemu-devel] [PATCH v4 08/11] qga-win: refactor disk info
From: |
Tomáš Golembiovský |
Subject: |
[Qemu-devel] [PATCH v4 08/11] qga-win: refactor disk info |
Date: |
Thu, 4 Oct 2018 13:22:35 +0200 |
Refactor building of disk info into a function that builds the list and
a function that returns infor for single disk. This will be used in
future commit that will handle multi-disk volumes.
Signed-off-by: Tomáš Golembiovský <address@hidden>
---
qga/commands-win32.c | 54 +++++++++++++++++++++++++++++---------------
1 file changed, 36 insertions(+), 18 deletions(-)
diff --git a/qga/commands-win32.c b/qga/commands-win32.c
index 376ca1e288..1e64642b8a 100644
--- a/qga/commands-win32.c
+++ b/qga/commands-win32.c
@@ -632,20 +632,15 @@ out_free:
return;
}
-/* VSS provider works with volumes, thus there is no difference if
- * the volume consist of spanned disks. Info about the first disk in the
- * volume is returned for the spanned disk group (LVM) */
-static GuestDiskAddressList *build_guest_disk_info(char *guid, Error **errp)
+static void get_single_disk_info(char *name, GuestDiskAddress *disk,
+ Error **errp)
{
- GuestDiskAddressList *list = NULL;
- GuestDiskAddress *disk;
SCSI_ADDRESS addr, *scsi_ad;
DWORD len;
HANDLE vol_h;
Error *local_err = NULL;
scsi_ad = &addr;
- char *name = g_strndup(guid, strlen(guid)-1);
g_debug("getting disk info for: %s", name);
vol_h = CreateFile(name, 0, FILE_SHARE_READ, NULL, OPEN_EXISTING,
@@ -655,7 +650,6 @@ static GuestDiskAddressList *build_guest_disk_info(char
*guid, Error **errp)
goto err;
}
- disk = g_malloc0(sizeof(*disk));
get_disk_properties(vol_h, disk, &local_err);
if (local_err) {
error_propagate(errp, local_err);
@@ -676,7 +670,6 @@ static GuestDiskAddressList *build_guest_disk_info(char
*guid, Error **errp)
g_debug("getting pci-controller info");
if (DeviceIoControl(vol_h, IOCTL_SCSI_GET_ADDRESS, NULL, 0, scsi_ad,
sizeof(SCSI_ADDRESS), &len, NULL)) {
- Error *local_err = NULL;
disk->unit = addr.Lun;
disk->target = addr.TargetId;
disk->bus = addr.PathId;
@@ -688,6 +681,7 @@ static GuestDiskAddressList *build_guest_disk_info(char
*guid, Error **errp)
g_debug("failed to get PCI controller info: %s",
error_get_pretty(local_err));
error_free(local_err);
+ local_err = NULL;
} else if (disk->pci_controller != NULL) {
g_debug("pci: domain=%lld bus=%lld slot=%lld function=%lld",
disk->pci_controller->domain,
@@ -704,20 +698,44 @@ static GuestDiskAddressList *build_guest_disk_info(char
*guid, Error **errp)
disk->pci_controller = g_malloc0(sizeof(GuestPCIAddress));
}
- list = g_malloc0(sizeof(*list));
- list->value = disk;
- list->next = NULL;
- CloseHandle(vol_h);
- g_free(name);
- return list;
-
err_close:
- g_free(disk);
CloseHandle(vol_h);
err:
+ return;
+}
+
+/* VSS provider works with volumes, thus there is no difference if
+ * the volume consist of spanned disks. Info about the first disk in the
+ * volume is returned for the spanned disk group (LVM) */
+static GuestDiskAddressList *build_guest_disk_info(char *guid, Error **errp)
+{
+ Error *local_err = NULL;
+ GuestDiskAddressList *list = NULL, *cur_item = NULL;
+ GuestDiskAddress *disk = NULL;
+
+ /* strip final backslash */
+ char *name = g_strdup(guid);
+ if (g_str_has_suffix(name, "\\") == TRUE) {
+ name[strlen(name) - 1] = 0;
+ }
+
+ disk = g_malloc0(sizeof(GuestDiskAddress));
+ get_single_disk_info(name, disk, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ goto out;
+ }
+
+ cur_item = g_malloc0(sizeof(*list));
+ cur_item->value = disk;
+ disk = NULL;
+ list = cur_item;
+
+out:
+ g_free(disk);
g_free(name);
- return NULL;
+ return list;
}
#else
--
2.19.0
- [Qemu-devel] [PATCH v4 10/11] qga: return disk device in guest-get-fsinfo, (continued)
- [Qemu-devel] [PATCH v4 10/11] qga: return disk device in guest-get-fsinfo, Tomáš Golembiovský, 2018/10/04
- [Qemu-devel] [PATCH v4 01/11] qga-win: fix crashes when PCI info cannot be retrived, Tomáš Golembiovský, 2018/10/04
- [Qemu-devel] [PATCH v4 03/11] build: rename CONFIG_QGA_NTDDDISK to CONFIG_QGA_NTDDSCSI, Tomáš Golembiovský, 2018/10/04
- [Qemu-devel] [PATCH v4 08/11] qga-win: refactor disk info,
Tomáš Golembiovský <=
- [Qemu-devel] [PATCH v4 11/11] qga-win: demystify namespace striping, Tomáš Golembiovský, 2018/10/04
- [Qemu-devel] [PATCH v4 06/11] configure: add test for libudev, Tomáš Golembiovský, 2018/10/04
- [Qemu-devel] [PATCH v4 09/11] qga-win: handle multi-disk volumes, Tomáš Golembiovský, 2018/10/04