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From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= <marcandre.lureau@redhat.com>
Date: Fri, 8 Jan 2021 07:40:57 -0500
Subject: [PATCH 06/10] qga: add command guest-get-disks
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RH-Author: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: <20210108074101.290008-7-marcandre.lureau@redhat.com>
Patchwork-id: 100525
O-Subject: [RHEL-8.3.0.z qemu-kvm PATCH 06/10] qga: add command guest-get-disks
Bugzilla: 1913818
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>

From: Marc-André Lureau <marcandre.lureau@redhat.com>

From: Tomáš Golembiovský <tgolembi@redhat.com>

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>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Michael Roth <michael.roth@amd.com>

(cherry-picked from commit c27ea3f9ef7c7f29e55bde91879f8514abce9c38)
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
 qga/commands-posix.c |  6 ++++++
 qga/commands-win32.c |  6 ++++++
 qga/qapi-schema.json | 31 +++++++++++++++++++++++++++++++
 3 files changed, 43 insertions(+)

diff --git a/qga/commands-posix.c b/qga/commands-posix.c
index 1c1a165daed..9b690f3cceb 100644
--- a/qga/commands-posix.c
+++ b/qga/commands-posix.c
@@ -2978,3 +2978,9 @@ 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 55ba5b263af..be63fa2b208 100644
--- a/qga/commands-win32.c
+++ b/qga/commands-win32.c
@@ -2234,3 +2234,9 @@ 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 fb4605cc19c..22df375c92f 100644
--- a/qga/qapi-schema.json
+++ b/qga/qapi-schema.json
@@ -852,6 +852,37 @@
            '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
+# @dependents: list of dependent devices; e.g. for LVs of the LVM this will
+#              hold the list of PVs, for LUKS encrypted volume this will
+#              contain the disk where the volume is placed.     (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', 'dependents': ['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:
 #
-- 
2.27.0