From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <39af85b31163336146dbce1dd8364418@gmx.de>
Date: Mon, 31 Oct 2011 23:47:32 +0100
From: cinap_lenrek@gmx.de
To: 9fans@9fans.net
In-Reply-To: <d5d05362e0a7b827b56761a2c06d519b@chula.quanstro.net>
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Subject: Re: [9fans] native (mostly) go for plan9
Topicbox-Message-UUID: 3d5bf64a-ead7-11e9-9d60-3106f5b1d025

for 9front page, i wrote a function that implements inferno
style pctl filedescriptor passing. basicly, you fork and then give
it a list of filedescriptors you want in the process like:

dupfds(foofd, 1, 2, -1);	// redirect foofd to stdin of this process, keep stdout/stderr

all the other filedescriptors get closed so you wont leak
any fds.

i find this style mutch cleaner than flags on filedescriptors.
here i say exactly what i want at the time of the exec/fork
instead of having to worry about it in some random place where
i open it.

the implementation uses /fd to figure out what filedescriptors
are open.

a kernel based version of this would be nice :)

--
cinap