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Make /var/empty immutable (with chattr +i) #18365

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merged 2 commits into from
Sep 7, 2016
Merged

Make /var/empty immutable (with chattr +i) #18365

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3877ec5
Make /var/empty immutable
domenkozar Sep 6, 2016
8f95e6f
hardcode e2fsprogs, idempotent chmod, remove care condition
domenkozar Sep 7, 2016
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21 changes: 14 additions & 7 deletions nixos/modules/system/activation/activation-script.nix
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Original file line number Diff line number Diff line change
Expand Up @@ -12,11 +12,13 @@ let
'';
});

path = map getBin
[ pkgs.coreutils pkgs.gnugrep pkgs.findutils
pkgs.glibc # needed for getent
pkgs.shadow
pkgs.nettools # needed for hostname
path = with pkgs; map getBin
[ coreutils
gnugrep
findutils
glibc # needed for getent
shadow
nettools # needed for hostname
];

in
Expand Down Expand Up @@ -137,8 +139,13 @@ in

mkdir -m 1777 -p /var/tmp

# Empty, read-only home directory of many system accounts.
mkdir -m 0555 -p /var/empty
# Empty, immutable home directory of many system accounts.
mkdir -p /var/empty
# Make sure it's really empty
${pkgs.e2fsprogs}/bin/chattr -i /var/empty
find /var/empty -mindepth 1 -delete
chmod 0555 /var/empty
${pkgs.e2fsprogs}/bin/chattr +i /var/empty
'';

system.activationScripts.usrbinenv = if config.environment.usrbinenv != null
Expand Down