Re: [PATCH 3/3] tracing/filters: disallow newline as delimeter
From: Li Zefan
Date: Tue Apr 21 2009 - 06:06:25 EST
Ingo Molnar wrote:
> * Li Zefan <lizf@xxxxxxxxxxxxxx> wrote:
>
>> I guess because user input is often ended with '\n' (like "echo
>> xxx"), thus '\n' is used as a delimeter besides ' ', but we can
>> just strip tailing spaces.
>
> Hm, how about:
>
> ( echo 'x'
> echo '|| y' ) > filter
>
> type of scripts? Shouldnt the parser be permissive in general?
>
This patch doesn't forbid this usage: ;)
( echo 'parent_comm == a'
echo '|| parent_comm == b' ) > filter
This patch does forbid this usage:
( echo 'parent_comm'
echo '=='
echo 'a' ) > filter
--
Zefan
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