[PATCH v3 06/26] migration: Report error when shutdown fails

["Cédric Le Goater" <clg@redhat.com>]

This will help detect issues regarding I/O channels usage.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
---
 migration/qemu-file.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/migration/qemu-file.c b/migration/qemu-file.c
index 94231ff2955c80b3d0fab11a40510d34c334a826..b69e0c62e2fcf21d346a3687df7eebee23791fdc 100644
--- a/migration/qemu-file.c
+++ b/migration/qemu-file.c
@@ -62,6 +62,8 @@ struct QEMUFile {
  */
 int qemu_file_shutdown(QEMUFile *f)
 {
+    Error *err = NULL;
+
     /*
      * We must set qemufile error before the real shutdown(), otherwise
      * there can be a race window where we thought IO all went though
@@ -90,7 +92,8 @@ int qemu_file_shutdown(QEMUFile *f)
         return -ENOSYS;
     }
 
-    if (qio_channel_shutdown(f->ioc, QIO_CHANNEL_SHUTDOWN_BOTH, NULL) < 0) {
+    if (qio_channel_shutdown(f->ioc, QIO_CHANNEL_SHUTDOWN_BOTH, &err) < 0) {
+        error_report_err(err);
         return -EIO;
     }
 
-- 
2.44.0