qga: guest-exec simple stdin/stdout/stderr redirection

Implemented with base64-encoded strings in qga json protocol.
Glib portable GIOChannel is used for data I/O.

Optinal stdin parameter of guest-exec command is now used as
stdin content for spawned subprocess.

If capture-output bool flag is specified, guest-exec redirects out/err
file descriptiors internally to pipes and collects subprocess
output.

Guest-exe-status is modified to return this collected data to requestor
in base64 encoding.

Signed-off-by: Yuri Pudgorodskiy <yur@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
* switch from 'struct GuestIOExecData' to 'GuestIOExecData'
* s/TRUE/true/g, s/FALSE/false/g for gboolean return values
* s/inp_data/input_data/
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/qga/qapi-schema.json b/qga/qapi-schema.json
index 4900b5e937..78362e071d 100644
--- a/qga/qapi-schema.json
+++ b/qga/qapi-schema.json
@@ -941,12 +941,17 @@
 # @err-data: #optional base64-encoded stderr of the process
 #       Note: @out-data and @err-data are present only
 #       if 'capture-output' was specified for 'guest-exec'
+# @out-truncated: #optional true if stdout was not fully captured
+#       due to size limitation.
+# @err-truncated: #optional true if stderr was not fully captured
+#       due to size limitation.
 #
 # Since: 2.5
 ##
 { 'struct': 'GuestExecStatus',
   'data': { 'exited': 'bool', '*exitcode': 'int', '*signal': 'int',
-            '*out-data': 'str', '*err-data': 'str' }}
+            '*out-data': 'str', '*err-data': 'str',
+            '*out-truncated': 'bool', '*err-truncated': 'bool' }}
 ##
 # @guest-exec-status
 #