linux-kernel - Re: How can I parse the command name from /proc/<pid>/stat?

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Message-ID: <54818A4B.60100@arm.com>
Date:	Fri, 05 Dec 2014 10:34:51 +0000
From:	"Suzuki K. Poulose" <Suzuki.Poulose@....com>
To:	Steven Stewart-Gallus <sstewartgallus00@...angara.bc.ca>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: How can I parse the command name from /proc/<pid>/stat?

On 04/12/14 19:44, Steven Stewart-Gallus wrote:
> Hello,
>
> Given an evil hacker trying to confuse process monitors that might use such
> strange process names as 'pause) R 0 0 (foo' how can I correctly parse the
> command name from /proc/<pid>/stat? Maybe I should just use /proc/<pid>/status?
> Maybe there should be some documentation written on the issue? I just wanted to
> send an email off to check if I was missing anything before writing a few small
> additions to the documentation or filing a bug report. procps-ng seems to use an
> ugly hack that involves knowing the limits on the size of a possible command
> name that I'm not actually sure works totally correctly.

You can do something like :

cmd_start = strchr(stat_buf, '(');
cmd_end = strrchr(stat_buf, ')');

Cheers
Suzuki


>
> Thank you,
> Steven Stewart-Gallus
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