[Qemu-devel] [PATCH 1/4] qga: added empty qmp_quest_get_fsinfo functionality.

["Denis V. Lunev" <den@openvz.org>]

From: Olga Krishtal <okrishtal@parallels.com>

We need qmp_quest_get_fsinfo togather with vss-provider, which works with
volumes. The call to this function is implemented via
FindFirst/NextVolumes. Moreover volumes in Windows OS are filesystem unit,
so it will be more effective to work with them rather with devices.

Signed-off-by: Olga Krishtal <okrishtal@parallels.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Michael Roth <mdroth@linux.vnet.ibm.com>
---
 qga/commands-win32.c | 34 +++++++++++++++++++++++++++++++---
 1 file changed, 31 insertions(+), 3 deletions(-)

diff --git a/qga/commands-win32.c b/qga/commands-win32.c
index 3ef0549..1a82ec9 100644
--- a/qga/commands-win32.c
+++ b/qga/commands-win32.c
@@ -382,12 +382,40 @@ static void guest_file_init(void)
     QTAILQ_INIT(&guest_file_state.filehandles);
 }
 
-GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp)
+static GuestFilesystemInfo *build_guest_fsinfo(char *guid, Error **errp)
 {
-    error_set(errp, QERR_UNSUPPORTED);
     return NULL;
 }
 
+GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp)
+{
+    HANDLE vol_h;
+    GuestFilesystemInfoList *new, *ret = NULL;
+    char guid[256];
+    bool res = false;
+
+    vol_h = FindFirstVolume(guid, sizeof(guid));
+    if (vol_h == INVALID_HANDLE_VALUE) {
+        error_setg_win32(errp, GetLastError(), "failed to find any volume");
+        return NULL;
+    }
+
+    do {
+        new = g_malloc(sizeof(*ret));
+        new->value = build_guest_fsinfo(guid, errp);
+        new->next = ret;
+        ret = new;
+        res = FindNextVolume(vol_h, guid, sizeof(guid));
+    } while (res);
+
+    if (GetLastError() != ERROR_NO_MORE_FILES) {
+        error_setg_win32(errp, GetLastError(), "failed to find next volume");
+    }
+
+    FindVolumeClose(vol_h);
+    return ret;
+}
+
 /*
  * Return status of freeze/thaw
  */
@@ -712,7 +740,7 @@ GList *ga_command_blacklist_init(GList *blacklist)
         "guest-set-user-password",
         "guest-get-memory-blocks", "guest-set-memory-blocks",
         "guest-get-memory-block-size",
-        "guest-fsfreeze-freeze-list", "guest-get-fsinfo",
+        "guest-fsfreeze-freeze-list",
         "guest-fstrim", NULL};
     char **p = (char **)list_unsupported;
 
-- 
1.9.1