[PATCH v2 1/3] qga: add command guest-get-disks

[Tomáš Golembiovský]

Add API and stubs for new guest-get-disks command.

The command guest-get-fsinfo can be used to list information about disks
and partitions but it is limited only to mounted disks with filesystem.
This new command should allow listing information about disks of the VM
regardles whether they are mounted or not. This can be usefull for
management applications for mapping virtualized devices or pass-through
devices to device names in the guest OS.

Signed-off-by: Tomáš Golembiovský <tgolembi@redhat.com>
---
 qga/commands-posix.c |  6 ++++++
 qga/commands-win32.c |  6 ++++++
 qga/qapi-schema.json | 29 +++++++++++++++++++++++++++++
 3 files changed, 41 insertions(+)

diff --git a/qga/commands-posix.c b/qga/commands-posix.c
index 744c2b5a5d..f99731af51 100644
--- a/qga/commands-posix.c
+++ b/qga/commands-posix.c
@@ -3042,3 +3042,9 @@ GuestOSInfo *qmp_guest_get_osinfo(Error **errp)
 
     return info;
 }
+
+GuestDiskInfoList *qmp_guest_get_disks(Error **errp)
+{
+    error_setg(errp, QERR_UNSUPPORTED);
+    return NULL;
+}
diff --git a/qga/commands-win32.c b/qga/commands-win32.c
index aaa71f147b..e9976a0c46 100644
--- a/qga/commands-win32.c
+++ b/qga/commands-win32.c
@@ -2229,3 +2229,9 @@ GuestOSInfo *qmp_guest_get_osinfo(Error **errp)
 
     return info;
 }
+
+GuestDiskInfoList *qmp_guest_get_disks(Error **errp)
+{
+    error_setg(errp, QERR_UNSUPPORTED);
+    return NULL;
+}
diff --git a/qga/qapi-schema.json b/qga/qapi-schema.json
index 408a662ea5..70b54e0d07 100644
--- a/qga/qapi-schema.json
+++ b/qga/qapi-schema.json
@@ -862,6 +862,35 @@
            'bus': 'int', 'target': 'int', 'unit': 'int',
            '*serial': 'str', '*dev': 'str'} }
 
+##
+# @GuestDiskInfo:
+#
+# @name: device node (Linux) or device UNC (Windows)
+# @partition: whether this is a partition or disk
+# @slaves: list of slave devices (Linux)
+# @address: disk address information (only for non-virtual devices)
+# @alias: optional alias assigned to the disk, on Linux this is a name assigned
+#         by device mapper
+#
+# Since 5.2
+##
+{ 'struct': 'GuestDiskInfo',
+  'data': {'name': 'str', 'partition': 'bool', 'slaves': ['str'],
+           '*address': 'GuestDiskAddress', '*alias': 'str'} }
+
+##
+# @guest-get-disks:
+#
+# Returns: The list of disks in the guest. For Windows these are only the
+#          physical disks. On Linux these are all root block devices of
+#          non-zero size including e.g. removable devices, loop devices,
+#          NBD, etc.
+#
+# Since: 5.2
+##
+{ 'command': 'guest-get-disks',
+  'returns': ['GuestDiskInfo'] }
+
 ##
 # @GuestFilesystemInfo:
 #
-- 
2.25.0