File 0056-blockjob-expose-error-string-via-qu.patch of Package qemu

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File 0056-blockjob-expose-error-string-via-qu.patch of Package qemu (Revision c16ea463f945b0ad3b6bd3979efb84fc)

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From 629bb16d95ad28ee00436fab523678c1bcaad9e2 Mon Sep 17 00:00:00 2001
From: John Snow <jsnow@redhat.com>
Date: Tue, 8 May 2018 19:36:59 -0400
Subject: [PATCH] blockjob: expose error string via query

When we've reached the concluded state, we need to expose the error
state if applicable. Add the new field.

This should be sufficient for determining if a job completed
successfully or not after concluding; if we want to discriminate
based on how it failed more mechanically, we can always add an
explicit return code enumeration later.

I didn't bother to make it only show up if we are in the concluded
state; I don't think it's necessary.

Cc: qemu-stable@nongnu.org
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit ab9ba614556ac5b0f8d96b99e0dba19f1e28d6c2)
Signed-off-by: Bruce Rogers <brogers@suse.com>
---
 blockjob.c           | 2 ++
 qapi/block-core.json | 6 +++++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/blockjob.c b/blockjob.c
index 27f957e571..4de48166b2 100644
--- a/blockjob.c
+++ b/blockjob.c
@@ -831,6 +831,8 @@ BlockJobInfo *block_job_query(BlockJob *job, Error **errp)
     info->status    = job->status;
     info->auto_finalize = job->auto_finalize;
     info->auto_dismiss  = job->auto_dismiss;
+    info->has_error = job->ret != 0;
+    info->error     = job->ret ? g_strdup(strerror(-job->ret)) : NULL;
     return info;
 }
 
diff --git a/qapi/block-core.json b/qapi/block-core.json
index c50517bff3..7da3bea6bc 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -1172,6 +1172,9 @@
 # @auto-dismiss: Job will dismiss itself when CONCLUDED, moving to the NULL
 #                state and disappearing from the query list. (since 2.12)
 #
+# @error: Error information if the job did not complete successfully.
+#         Not set if the job completed successfully. (since 2.12.1)
+#
 # Since: 1.1
 ##
 { 'struct': 'BlockJobInfo',
@@ -1179,7 +1182,8 @@
            'offset': 'int', 'busy': 'bool', 'paused': 'bool', 'speed': 'int',
            'io-status': 'BlockDeviceIoStatus', 'ready': 'bool',
            'status': 'BlockJobStatus',
-           'auto-finalize': 'bool', 'auto-dismiss': 'bool' } }
+           'auto-finalize': 'bool', 'auto-dismiss': 'bool',
+           '*error': 'str' } }
 
 ##
 # @query-block-jobs:

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File 0056-blockjob-expose-error-string-via-qu.patch of Package qemu (Revision c16ea463f945b0ad3b6bd3979efb84fc)

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