From: Xiao Yang <yangx.jy@cn.fujitsu.com>
To: Eric Sandeen <sandeen@sandeen.net>
Cc: Christoph Hellwig <hch@infradead.org>, <darrick.wong@oracle.com>,
<linux-xfs@vger.kernel.org>
Subject: Re: [PATCH] io/attr.c: Disallow specifying both -D and -R options for chattr command
Date: Fri, 24 Jul 2020 09:09:00 +0800 [thread overview]
Message-ID: <5F1A34AC.8080505@cn.fujitsu.com> (raw)
In-Reply-To: <86314935-eeb9-3c8a-5d64-7db8b36ce43d@sandeen.net>
On 2020/7/24 6:15, Eric Sandeen wrote:
> On 7/22/20 11:39 PM, Xiao Yang wrote:
>> On 2020/7/23 14:08, Christoph Hellwig wrote:
>>> On Thu, Jul 23, 2020 at 01:27:23PM +0800, Xiao Yang wrote:
>>>> -D and -R options are mutually exclusive actually but chattr command
>>>> doesn't check it so that always applies -D option when both of them
>>>> are specified. For example:
>>> Looks good,
>>>
>>> Reviewed-by: Christoph Hellwig<hch@lst.de>
>> Hi,
>>
>> Ah, I have a question after sending the patch:
>> Other commands(e.g. cowextsize) including the same options seem to avoid the issue by accepting the last option, as below:
>> --------------------------------------------------------
>> io/cowextsize.c
>> 141 while ((c = getopt(argc, argv, "DR")) != EOF) {
>> 142 switch (c) {
>> 143 case 'D':
>> 144 recurse_all = 0;
>> 145 recurse_dir = 1;
>> 146 break;
>> 147 case 'R':
>> 148 recurse_all = 1;
>> 149 recurse_dir = 0;
>> 150 break;
> Yep, I meant to look at this but hadn't gotten to it yet. These should all
> be consistent, and I tend to agree with Dave that explicitly conflicting
> incompatible options and erroring out is better than silently accepting
> the last one specified.
>
> And indeed help specifies that they are exclusive:
>
> cowextsize_cmd.args = _("[-D | -R] [cowextsize]");
>
> It'd be great if you want to send a V2 that makes the behavior (and
> documentation) of any/all commands that accept [-D | -R] consistent.
Hi Eric, Dave
Thanks for your suggestions.
I will send v2 patch to make the behavior consistent.
Thanks,
Xiao Yang
> Thanks,
> -Eric
>
>
> .
>
prev parent reply other threads:[~2020-07-24 1:09 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-23 5:27 [PATCH] io/attr.c: Disallow specifying both -D and -R options for chattr command Xiao Yang
2020-07-23 6:08 ` Christoph Hellwig
2020-07-23 6:39 ` Xiao Yang
2020-07-23 22:10 ` Dave Chinner
2020-07-23 22:15 ` Eric Sandeen
2020-07-24 1:09 ` Xiao Yang [this message]
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