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Date: Tue, 8 Mar 2016 09:42:56 +0800
From: Changlong Xie <xiecl.fnst@cn.fujitsu.com>
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Subject: Re: [Qemu-devel] [PATCH v10 2/3] quorum: implement bdrv_add_child()
	and bdrv_del_child()
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To: Eric Blake <eblake@redhat.com>, Max Reitz <mreitz@redhat.com>, qemu devel <qemu-devel@nongnu.org>, Alberto Garcia <berto@igalia.com>, Kevin Wolf <kwolf@redhat.com>, Stefan Hajnoczi <stefanha@redhat.com>
Cc: qemu block <qemu-block@nongnu.org>, Jiang Yunhong <yunhong.jiang@intel.com>, Dong Eddie <eddie.dong@intel.com>, Markus Armbruster <armbru@redhat.com>, "Dr. David Alan Gilbert" <dgilbert@redhat.com>, Gonglei <arei.gonglei@huawei.com>, zhanghailiang <zhang.zhanghailiang@huawei.com>

On 03/08/2016 12:02 AM, Eric Blake wrote:
> On 03/05/2016 11:13 AM, Max Reitz wrote:
>
>>> +    index = atoi(child->name + 9);
>>
>> Optional: Assert absence of an error:
>>
>
> Indeed, atoi() is worthless, because it cannot do error detection.
>
>> unsigned long index;
>> char *endptr;
>>
>> index = strtoul(child->name + 9, &endptr, 10);
>> assert(index >= 0 && !*endptr);
>
> Still incorrect; you aren't handling errno properly for detecting all
> errors.  Even better is to use qemu_strtoul(), which already handles
> proper error detection.
>

Will fix this in next version, thanks for pointing it out.

Thanks
	-Xie