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nixos/dnscrypt-proxy: more fs isolation for the updater

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It'd be better to do the update as an unprivileged user; for
now, we do our best to minimize the surface available.  We
filter mount syscalls to prevent the process from undoing the fs
isolation.
This commit is contained in:
Joachim Fasting 2017-03-08 00:42:20 +01:00
parent e72aaa73ea
commit 5f27abec23
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1 changed files with 3 additions and 1 deletions
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nixos/modules/services/networking/dnscrypt-proxy.nix
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@ -285,7 +285,9 @@ in
PrivateTmp = true; PrivateTmp = true;
PrivateDevices = true; PrivateDevices = true;
ProtectHome = true; ProtectHome = true;
ProtectSystem = true; ProtectSystem = "strict";
ReadWritePaths = "${dirOf stateDirectory} ${stateDirectory}";
SystemCallFilter = "~@mount";
}; };
}; };