qemu-ga: Add schema documentation for types

Document guest agent schema types in similar fashion to qmp schema
types.

qapi-schema-guest.json

@@ -36,18 +36,43 @@
 ##
 { 'command': 'guest-ping' }
 
+##
+# @GuestAgentCommandInfo:
+#
+# Information about guest agent commands.
+#
+# @name: name of the command
+#
+# @enabled: whether command is currently enabled by guest admin
+#
+# Since 1.1.0
+##
+{ 'type': 'GuestAgentCommandInfo',
+  'data': { 'name': 'str', 'enabled': 'bool' } }
+
+##
+# @GuestAgentInfo
+#
+# Information about guest agent.
+#
+# @version: guest agent version
+#
+# @supported_commands: Information about guest agent commands
+#
+# Since 0.15.0
+##
+{ 'type': 'GuestAgentInfo',
+  'data': { 'version': 'str',
+            'supported_commands': ['GuestAgentCommandInfo'] } }
 ##
 # @guest-info:
 #
 # Get some information about the guest agent.
 #
+# Returns: @GuestAgentInfo
+#
 # Since: 0.15.0
 ##
-{ 'type': 'GuestAgentCommandInfo',
-  'data': { 'name': 'str', 'enabled': 'bool' } }
-{ 'type': 'GuestAgentInfo',
-  'data': { 'version': 'str',
-            'supported_commands': ['GuestAgentCommandInfo'] } }
 { 'command': 'guest-info',
   'returns': 'GuestAgentInfo' }
 
@@ -97,6 +122,23 @@
 { 'command': 'guest-file-close',
   'data': { 'handle': 'int' } }
 
+##
+# @GuestFileRead
+#
+# Result of guest agent file-read operation
+#
+# @count: number of bytes read (note: count is *before*
+#         base64-encoding is applied)
+#
+# @buf-b64: base64-encoded bytes read
+#
+# @eof: whether EOF was encountered during read operation.
+#
+# Since: 0.15.0
+##
+{ 'type': 'GuestFileRead',
+  'data': { 'count': 'int', 'buf-b64': 'str', 'eof': 'bool' } }
+
 ##
 # @guest-file-read:
 #
@@ -106,18 +148,29 @@
 #
 # @count: #optional maximum number of bytes to read (default is 4KB)
 #
-# Returns: GuestFileRead on success. Note: count is number of bytes read
-#          *before* base64 encoding bytes read.
+# Returns: @GuestFileRead on success.
 #
 # Since: 0.15.0
 ##
-{ 'type': 'GuestFileRead',
-  'data': { 'count': 'int', 'buf-b64': 'str', 'eof': 'bool' } }
-
 { 'command': 'guest-file-read',
   'data':    { 'handle': 'int', '*count': 'int' },
   'returns': 'GuestFileRead' }
 
+##
+# @GuestFileWrite
+#
+# Result of guest agent file-write operation
+#
+# @count: number of bytes written (note: count is actual bytes
+#         written, after base64-decoding of provided buffer)
+#
+# @eof: whether EOF was encountered during write operation.
+#
+# Since: 0.15.0
+##
+{ 'type': 'GuestFileWrite',
+  'data': { 'count': 'int', 'eof': 'bool' } }
+
 ##
 # @guest-file-write:
 #
@@ -130,17 +183,29 @@
 # @count: #optional bytes to write (actual bytes, after base64-decode),
 #         default is all content in buf-b64 buffer after base64 decoding
 #
-# Returns: GuestFileWrite on success. Note: count is the number of bytes
-#          base64-decoded bytes written
+# Returns: @GuestFileWrite on success.
 #
 # Since: 0.15.0
 ##
-{ 'type': 'GuestFileWrite',
-  'data': { 'count': 'int', 'eof': 'bool' } }
 { 'command': 'guest-file-write',
   'data':    { 'handle': 'int', 'buf-b64': 'str', '*count': 'int' },
   'returns': 'GuestFileWrite' }
 
+
+##
+# @GuestFileSeek
+#
+# Result of guest agent file-seek operation
+#
+# @position: current file position
+#
+# @eof: whether EOF was encountered during file seek
+#
+# Since: 0.15.0
+##
+{ 'type': 'GuestFileSeek',
+  'data': { 'position': 'int', 'eof': 'bool' } }
+
 ##
 # @guest-file-seek:
 #
@@ -154,13 +219,10 @@
 #
 # @whence: SEEK_SET, SEEK_CUR, or SEEK_END, as with fseek()
 #
-# Returns: GuestFileSeek on success.
+# Returns: @GuestFileSeek on success.
 #
 # Since: 0.15.0
 ##
-{ 'type': 'GuestFileSeek',
-  'data': { 'position': 'int', 'eof': 'bool' } }
-
 { 'command': 'guest-file-seek',
   'data':    { 'handle': 'int', 'offset': 'int', 'whence': 'int' },
   'returns': 'GuestFileSeek' }
@@ -180,18 +242,32 @@
   'data': { 'handle': 'int' } }
 
 ##
-# @guest-fsfreeze-status:
+# @GuestFsFreezeStatus
 #
-# Get guest fsfreeze state. error state indicates failure to thaw 1 or more
-# previously frozen filesystems, or failure to open a previously cached
-# filesytem (filesystem unmounted/directory changes, etc).
+# An enumation of filesystem freeze states
 #
-# Returns: GuestFsfreezeStatus ("thawed", "frozen", etc., as defined below)
+# @thawed: filesystems thawed/unfrozen
+#
+# @frozen: all non-network guest filesystems frozen
+#
+# @error: failure to thaw 1 or more
+#         previously frozen filesystems, or failure to open a previously
+#         cached filesytem (filesystem unmounted/directory changes, etc).
 #
 # Since: 0.15.0
 ##
 { 'enum': 'GuestFsfreezeStatus',
   'data': [ 'thawed', 'frozen', 'error' ] }
+
+##
+# @guest-fsfreeze-status:
+#
+# Get guest fsfreeze state. error state indicates
+#
+# Returns: GuestFsfreezeStatus ("thawed", "frozen", etc., as defined below)
+#
+# Since: 0.15.0
+##
 { 'command': 'guest-fsfreeze-status',
   'returns': 'GuestFsfreezeStatus' }