[Qemu-block] [Qemu-devel][PATCH] qemu-img: fix failed qemu-img command return zero exit code defeat

[Xu Tian]

If backing file can not open when do image rebase, flag 'ret' not
assign a non-zero value, then qemu-img process exit with code zero.
Assign value '-1' to flag 'ret' after report error message to fix
this defeat.

BZ: https://bugzilla.redhat.com/show_bug.cgi?id=1383012

Signed-off-by: Xu Tian <address@hidden>
---
 qemu-img.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/qemu-img.c b/qemu-img.c
index 46f2a6d..37dcade 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -2918,6 +2918,7 @@ static int img_rebase(int argc, char **argv)
             error_reportf_err(local_err,
                               "Could not open old backing file '%s': ",
                               backing_name);
+            ret = -1;
             goto out;
         }
 
@@ -2935,6 +2936,7 @@ static int img_rebase(int argc, char **argv)
                 error_reportf_err(local_err,
                                   "Could not open new backing file '%s': ",
                                   out_baseimg);
+                ret = -1;
                 goto out;
             }
         }
-- 
2.5.5