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Re: [Qemu-block] [Qemu-devel] [PATCH] sheepdog: Set error when connectio
From: |
Daniel P. Berrange |
Subject: |
Re: [Qemu-block] [Qemu-devel] [PATCH] sheepdog: Set error when connection fails |
Date: |
Fri, 21 Apr 2017 09:31:37 +0100 |
User-agent: |
Mutt/1.7.1 (2016-10-04) |
On Fri, Apr 21, 2017 at 07:43:36AM +0200, Markus Armbruster wrote:
> Kevin Wolf <address@hidden> writes:
>
> > Am 20.04.2017 um 17:30 hat Daniel P. Berrange geschrieben:
> >> On Thu, Apr 20, 2017 at 12:00:03PM +0800, Fam Zheng wrote:
> >> > Signed-off-by: Fam Zheng <address@hidden>
> >> > ---
> >> > block/sheepdog.c | 1 +
> >> > 1 file changed, 1 insertion(+)
> >> >
> >> > diff --git a/block/sheepdog.c b/block/sheepdog.c
> >> > index fb9203e..7e889ee 100644
> >> > --- a/block/sheepdog.c
> >> > +++ b/block/sheepdog.c
> >> > @@ -608,6 +608,7 @@ static int connect_to_sdog(BDRVSheepdogState *s,
> >> > Error **errp)
> >> > qemu_set_nonblock(fd);
> >> > } else {
> >> > fd = -EIO;
> >> > + error_setg(errp, "Failed to connect to sheepdog server");
> >> > }
> >>
> >> This doesn't make much sense to me. The lines just above the
> >> diff context have this:
> >>
> >> fd = socket_connect(s->addr, errp, NULL, NULL);
> >>
> >> socket_connect should have already reported an error on "errp"
> >> in the scenario that 'fd == -1'.
> >
> > By the way, am I the only one who thinks that having errp anywhere else
> > than as the last argument is bad style? I can easily see myself missing
> > that this functions sets it because the last argument is NULL.
>
> Yes, it's bad style because it's suprising. Worth fixing.
In fact we can simply delete the last two arguments to socket_connect()
entirely. Most code is now switched over to use QIOChannel APIs, so we
don't have anything which uses the non-blocking connect feature of
socket_connect() anymore.
Regards,
Daniel
--
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- Re: [Qemu-block] [Qemu-devel] [PATCH] sheepdog: Set error when connection fails, (continued)
- Re: [Qemu-block] [Qemu-devel] [PATCH] sheepdog: Set error when connection fails, Philippe Mathieu-Daudé, 2017/04/20
- Re: [Qemu-block] [PATCH] sheepdog: Set error when connection fails, Jeff Cody, 2017/04/20
- Re: [Qemu-block] [PATCH] sheepdog: Set error when connection fails, Jeff Cody, 2017/04/20
- Re: [Qemu-block] [Qemu-devel] [PATCH] sheepdog: Set error when connection fails, Daniel P. Berrange, 2017/04/20
- Re: [Qemu-block] [Qemu-devel] [PATCH] sheepdog: Set error when connection fails, Jeff Cody, 2017/04/20
- Re: [Qemu-block] [Qemu-devel] [PATCH] sheepdog: Set error when connection fails, Kevin Wolf, 2017/04/20
- Re: [Qemu-block] [Qemu-devel] [PATCH] sheepdog: Set error when connection fails, Jeff Cody, 2017/04/20
- Re: [Qemu-block] [Qemu-devel] [PATCH] sheepdog: Set error when connection fails, Fam Zheng, 2017/04/20
- Re: [Qemu-block] [Qemu-devel] [PATCH] sheepdog: Set error when connection fails, Markus Armbruster, 2017/04/21
- Re: [Qemu-block] [Qemu-devel] [PATCH] sheepdog: Set error when connection fails,
Daniel P. Berrange <=
- Re: [Qemu-block] [Qemu-devel] [PATCH] sheepdog: Set error when connection fails, Fam Zheng, 2017/04/21
- Re: [Qemu-block] [Qemu-devel] [PATCH] sheepdog: Set error when connection fails, Daniel P. Berrange, 2017/04/21