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Re: bug in [ -f file ] test

From: László Házy
Subject: Re: bug in [ -f file ] test
Date: Thu, 28 Jul 2016 15:49:29 -0400

[root]# cat /usr/lib/sysctl.d/50-default.conf | grep fs
fs.protected_hardlinks = 1
fs.protected_symlinks = 1

I guess this explains it. Problem is (my problem now) that it breaks the startup scripts of a $50000 software, which does work on an older FedoraCore. Is this a kernel problem then?

Thanks to all for your help.

On Thu, 2016-07-28 at 21:06 +0200, Piotr Grzybowski wrote:
 yeah, thats why I asked about version, but never mind that, Laszlo: I would like to see :

cat /usr/lib/sysctl.d/50-default.conf | grep fs


On 28 Jul 2016, at 20:56, Charles Daffern wrote:

As far as I'm aware, the inability to use symlinks owned by another user in a sticky directory is a security feature of some kernels. It helps to prevent symlink attacks.

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