[Qemu-block] [PULL 13/17] block/nbd-client: save first fatal error in nbd_iter_error

[Eric Blake]

From: Vladimir Sementsov-Ogievskiy <address@hidden>

It is ok, that fatal error hides previous not fatal, but hiding
first fatal error is a bad feature.

Signed-off-by: Vladimir Sementsov-Ogievskiy <address@hidden>
Reviewed-by: Eric Blake <address@hidden>
Message-Id: <address@hidden>
Signed-off-by: Eric Blake <address@hidden>
---
 block/nbd-client.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/block/nbd-client.c b/block/nbd-client.c
index 7b68499b76a..0d9f73a137f 100644
--- a/block/nbd-client.c
+++ b/block/nbd-client.c
@@ -481,6 +481,7 @@ static coroutine_fn int nbd_co_receive_one_chunk(

 typedef struct NBDReplyChunkIter {
     int ret;
+    bool fatal;
     Error *err;
     bool done, only_structured;
 } NBDReplyChunkIter;
@@ -490,11 +491,12 @@ static void nbd_iter_error(NBDReplyChunkIter *iter, bool 
fatal,
 {
     assert(ret < 0);

-    if (fatal || iter->ret == 0) {
+    if ((fatal && !iter->fatal) || iter->ret == 0) {
         if (iter->ret != 0) {
             error_free(iter->err);
             iter->err = NULL;
         }
+        iter->fatal = fatal;
         iter->ret = ret;
         error_propagate(&iter->err, *local_err);
     } else {
-- 
2.14.3