Re: [PATCH] virsh: Fix return code for dump

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On 5/4/20 2:09 PM, Andrea Bolognani wrote:
On Mon, 2020-05-04 at 09:48 +0000, Xuyandong (Yandong Xu) wrote:
+++ b/tools/virsh-domain.c
@@ -5522,7 +5522,6 @@ static bool
  cmdDump(vshControl *ctl, const vshCmd *cmd)
  {
      virDomainPtr dom;
-    bool ret = false;
      bool verbose = false;
      const char *name = NULL;
      const char *to = NULL;
@@ -5556,12 +5555,12 @@ cmdDump(vshControl *ctl, const vshCmd *cmd)
virThreadJoin(&workerThread); - if (!ret)
+    if (!data.ret)
          vshPrintExtra(ctl, _("\nDomain %s dumped to %s\n"), name, to);
cleanup:
      virshDomainFree(dom);
-    return !ret;
+    return !data.ret;
  }

This is in the same vein as fbc4e81a36d1, and I think we should
definitely squeeze it in before release, so that's a

   Signed-off-by: Andrea Bolognani <abologna@xxxxxxxxxx>

from me. Dan, what do you think?


I'm in the middle of review too. But I find !data.ret a bit confusing. The function is returning a boolean and not a pointer or an int. So how about 'return data.ret != 0'? I know John was against using 'if (!int)' and it kind of makes sense.

Or even better, we can use our regular pattern and keep @ret, and do something like:

if (data.ret < 0)
  goto cleanup;

vshPrintExtra()
ret = true;
...
return ret;


This is something that is perfectly fixable by committer, so no need to resend. I too agree that this is something that needs fixing and the sooner we fix it the better.

Reviewed-by: Michal Privoznik <mprivozn@xxxxxxxxxx>

Michal




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