[PATCH v3 04/10] migration: Deliver return path file error to migrate state too

[Peter Xu <peterx@redhat.com>]

We've already did this for most of the return path thread errors, but not
yet for the IO errors happened on the return path qemufile.  Do that too.

Re-export qemu_file_get_error_obj().

Signed-off-by: Peter Xu <peterx@redhat.com>
---
 migration/qemu-file.h | 1 +
 migration/migration.c | 1 +
 migration/qemu-file.c | 2 +-
 3 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/migration/qemu-file.h b/migration/qemu-file.h
index 03e718c264..75efe503c4 100644
--- a/migration/qemu-file.h
+++ b/migration/qemu-file.h
@@ -120,6 +120,7 @@ int coroutine_mixed_fn qemu_peek_byte(QEMUFile *f, int offset);
 void qemu_file_skip(QEMUFile *f, int size);
 int qemu_file_get_error_obj_any(QEMUFile *f1, QEMUFile *f2, Error **errp);
 void qemu_file_set_error_obj(QEMUFile *f, int ret, Error *err);
+int qemu_file_get_error_obj(QEMUFile *f, Error **errp);
 void qemu_file_set_error(QEMUFile *f, int ret);
 int qemu_file_shutdown(QEMUFile *f);
 QEMUFile *qemu_file_get_return_path(QEMUFile *f);
diff --git a/migration/migration.c b/migration/migration.c
index e821e80094..b28b504b4c 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -1884,6 +1884,7 @@ static void *source_return_path_thread(void *opaque)
         header_len = qemu_get_be16(rp);
 
         if (qemu_file_get_error(rp)) {
+            qemu_file_get_error_obj(rp, &err);
             goto out;
         }
 
diff --git a/migration/qemu-file.c b/migration/qemu-file.c
index 5e8207dae4..ffa9c0a48a 100644
--- a/migration/qemu-file.c
+++ b/migration/qemu-file.c
@@ -146,7 +146,7 @@ void qemu_file_set_hooks(QEMUFile *f, const QEMUFileHooks *hooks)
  * is not 0.
  *
  */
-static int qemu_file_get_error_obj(QEMUFile *f, Error **errp)
+int qemu_file_get_error_obj(QEMUFile *f, Error **errp)
 {
     if (errp) {
         *errp = f->last_error_obj ? error_copy(f->last_error_obj) : NULL;
-- 
2.41.0