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* Style change. 

svn path=/nixos/trunk/; revision=16730
This commit is contained in:
Eelco Dolstra 2009-08-16 14:54:31 +00:00
parent 39bffdb34c
commit 2884c9a836
1 changed files with 81 additions and 75 deletions
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156
modules/security/setuid-wrappers.nix
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@ -4,56 +4,6 @@ with pkgs.lib;
let
options = {
security = {
setuidPrograms = mkOption {
default = [
"passwd" "su" "crontab" "ping" "ping6"
"fusermount" "wodim" "cdrdao" "growisofs"
];
description = ''
Only the programs from system path listed her will be made setuid root
(through a wrapper program). It's better to set
<option>security.extraSetuidPrograms</option>.
'';
};
# !!! obsolete
extraSetuidPrograms = mkOption {
default = [];
example = ["fusermount"];
description = ''
This option lists additional programs that must be made setuid
root.
'';
};
setuidOwners = mkOption {
default = [];
example = [{
program = "sendmail";
owner = "nobody";
group = "postdrop";
setuid = false;
setgid = true;
}];
description = ''
This option allows the ownership and permissions on the setuid
wrappers for specific programs to be overriden from the
default (setuid root, but not setgid root).
'';
};
wrapperDir = mkOption {
default = "/var/setuid-wrappers";
description = ''
This option defines the path to the setuid wrappers. It
should generally not be overriden.
'';
};
};
};
setuidWrapper = pkgs.stdenv.mkDerivation {
name = "setuid-wrapper";
buildCommand = ''
@ -66,33 +16,88 @@ let
in
{
require = [options];
system = {
activationScripts = {
setuid =
let
setuidPrograms = builtins.toString (
config.security.setuidPrograms ++
config.security.extraSetuidPrograms ++
map (x: x.program) config.security.setuidOwners
);
###### interface
adjustSetuidOwner = concatStrings (map
(_entry: let entry = {
owner = "nobody";
group = "nogroup";
setuid = false;
setgid = false;
} //_entry; in
''
chown ${entry.owner}.${entry.group} $wrapperDir/${entry.program}
chmod u${if entry.setuid then "+" else "-"}s $wrapperDir/${entry.program}
chmod g${if entry.setgid then "+" else "-"}s $wrapperDir/${entry.program}
'')
config.security.setuidOwners);
options = {
in pkgs.stringsWithDeps.fullDepEntry ''
security.setuidPrograms = mkOption {
default =
[ "passwd" "su" "crontab" "ping" "ping6"
"fusermount" "wodim" "cdrdao" "growisofs"
];
description = ''
Only the programs from system path listed here will be made
setuid root (through a wrapper program).
'';
};
# !!! obsolete
security.extraSetuidPrograms = mkOption {
default = [];
example = ["fusermount"];
description = ''
This option lists additional programs that must be made setuid
root.
'';
};
security.setuidOwners = mkOption {
default = [];
example =
[ { program = "sendmail";
owner = "nobody";
group = "postdrop";
setuid = false;
setgid = true;
}
];
description = ''
This option allows the ownership and permissions on the setuid
wrappers for specific programs to be overriden from the
default (setuid root, but not setgid root).
'';
};
security.wrapperDir = mkOption {
default = "/var/setuid-wrappers";
description = ''
This option defines the path to the setuid wrappers. It
should generally not be overriden.
'';
};
};
###### implementation
config = {
system.activationScripts.setuid =
let
setuidPrograms = builtins.toString (
config.security.setuidPrograms ++
config.security.extraSetuidPrograms ++
map (x: x.program) config.security.setuidOwners
);
adjustSetuidOwner = concatStrings (map
(_entry: let entry = {
owner = "nobody";
group = "nogroup";
setuid = false;
setgid = false;
} //_entry; in
''
chown ${entry.owner}.${entry.group} $wrapperDir/${entry.program}
chmod u${if entry.setuid then "+" else "-"}s $wrapperDir/${entry.program}
chmod g${if entry.setgid then "+" else "-"}s $wrapperDir/${entry.program}
'')
config.security.setuidOwners);
in pkgs.stringsWithDeps.fullDepEntry
''
# Look in the system path and in the default profile for
# programs to be wrapped. However, having setuid programs
# in a profile is problematic, since the NixOS activation
@ -122,6 +127,7 @@ in
${adjustSetuidOwner}
'' [ "defaultPath" "users" ];
};
};
}