linux-kernel - Peek at envinroment of procs

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Message-ID: <Pine.LNX.4.61.0701230247030.317@yvahk01.tjqt.qr>
Date:	Tue, 23 Jan 2007 02:54:09 +0100 (MET)
From:	Jan Engelhardt <jengelh@...ux01.gwdg.de>
To:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Peek at envinroment of procs

Hi,

what is the preferred way to get at another process's environment 
variables? /proc/$$/environ looks like the most portable way [across all 
arches Linux runs on], but it cannot easily be mmap'ed because the size 
is not known. In fact, mmap does not seem to work at all on that file. 
So I would have to allocate a large buffer (4K is the limit for procfs 
files AFAICR) to potentially hold big environments, which does not sound 
really wise either. Or is it the best choice available?

	-`J'
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