linux-kernel - Re: [PATCH] ver_linux: module-init-tools.patch

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Message-ID: <CAJ1xhMXXvCG2vKE9BCdTWNsmQfanQWC3DT9H-SXwC5DXnQ8Lvg@mail.gmail.com>
Date:	Fri, 2 Oct 2015 23:57:10 +0300
From:	Alexander Kapshuk <alexander.kapshuk@...il.com>
To:	linux-kernel <linux-kernel@...r.kernel.org>
Cc:	Jim Davis <jim.epost@...il.com>
Subject: Re: [PATCH] ver_linux: module-init-tools.patch

On Fri, Oct 2, 2015 at 11:22 PM, Alexander Kapshuk
<alexander.kapshuk@...il.com> wrote:
> On Fri, Oct 2, 2015 at 10:45 PM, Jim Davis <jim.epost@...il.com> wrote:
>> On Fri, Oct 2, 2015 at 12:35 PM, Jim Davis <jim.epost@...il.com> wrote:
>>> On Fri, Oct 2, 2015 at 12:03 PM, Alexander Kapshuk
>>>
>>>>>> +depmod=`whereis depmod | awk '{print $2}'`
>>>>>
>>
>>> I suspect it'll be hard to come up with something that's 100%
>>> foolproof and respects user's choices.  Sticking with searching the
>>> user's $PATH at least won't lead to surprises about which program is
>>> being run...
>>
>> Though looking back at your patch, what might work is to look first
>> for depmod in the user's $PATH and then try whereis only if that
>> fails.  I'm not convinced that's much better than just searching
>> $PATH, but that at least would go with the user's preference first.
>>
>> --
>> Jim
>
> Seems like the way to go. Thanks.
>
> I'll resubmit this and the other patches tomorrow with this
> consideration in mind.

What do you think of this?

which depmod >/dev/null 2>&1 && depmod=depmod ||
depmod=`whereis depmod | awk '{print $2}'`

test -n "$depmod" -a -x "$depmod" &&
$depmod -V 2>&1 |
sed '
    /[0-9]$/!d
    s/[^0-9\.]//g
    s/^/module-init-tools\t/
'

Thanks.
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