linux-kernel - Re: selftests:netfilter: nft_nat.sh: internal00-0 Error Could not open file \"-\" No such file or directory

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Message-ID: <20191127220525.GH795@breakpoint.cc>
Date:   Wed, 27 Nov 2019 23:05:25 +0100
From:   Florian Westphal <fw@...len.de>
To:     Naresh Kamboju <naresh.kamboju@...aro.org>
Cc:     Florian Westphal <fw@...len.de>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>,
        Netdev <netdev@...r.kernel.org>, Shuah Khan <shuah@...nel.org>,
        pablo@...filter.org, jeffrin@...agiritech.edu.in,
        horms@...ge.net.au, yanhaishuang@...s.chinamobile.com,
        lkft-triage@...ts.linaro.org
Subject: Re: selftests:netfilter: nft_nat.sh: internal00-0 Error Could not
 open file \"-\" No such file or directory

Naresh Kamboju <naresh.kamboju@...aro.org> wrote:
> On Tue, 26 Nov 2019 at 21:26, Florian Westphal <fw@...len.de> wrote:
> >
> > Naresh Kamboju <naresh.kamboju@...aro.org> wrote:
> > > Do you see the following error while running selftests netfilter
> > > nft_nat.sh test ?
> > > Are we missing any kernel config fragments ? We are merging configs
> > > from the directory.
> > >
> > > # selftests netfilter nft_nat.sh
> > > netfilter: nft_nat.sh_ #
> > > # Cannot create namespace file \"/var/run/netns/ns1\" File exists
> >
> > 'ns1' is not a good name.
> > What is the output of nft --version?
> 
> nftables v0.7 (Scrooge McDuck)

Oh, that explains it.  "-" only works
since 0.8.4 ...

I will submit another patch that uses /dev/stdin instead.