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nixos/syncoid: add global and per-dataset permissions options

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This commit is contained in:
misuzu 2021-08-13 10:23:04 +03:00
parent 9df2cb074d
commit 6802eb4241
1 changed files with 57 additions and 6 deletions
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63
nixos/modules/services/backup/syncoid.nix
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@ -79,6 +79,33 @@ in
'';
};
localSourceAllow = mkOption {
type = types.listOf types.str;
# Permissions snapshot and destroy are in case --no-sync-snap is not used
default = [ "bookmark" "hold" "send" "snapshot" "destroy" ];
description = ''
Permissions granted for the <option>services.syncoid.user</option> user
for local source datasets. See
<link xlink:href="https://openzfs.github.io/openzfs-docs/man/8/zfs-allow.8.html"/>
for available permissions.
'';
};
localTargetAllow = mkOption {
type = types.listOf types.str;
default = [ "change-key" "compression" "create" "mount" "mountpoint" "receive" "rollback" ];
example = [ "create" "mount" "receive" "rollback" ];
description = ''
Permissions granted for the <option>services.syncoid.user</option> user
for local target datasets. See
<link xlink:href="https://openzfs.github.io/openzfs-docs/man/8/zfs-allow.8.html"/>
for available permissions.
Make sure to include the <literal>change-key</literal> permission if you send raw encrypted datasets,
the <literal>compression</literal> permission if you send raw compressed datasets, and so on.
For remote target datasets you'll have to set your remote user permissions by yourself.
'';
};
commonArgs = mkOption {
type = types.listOf types.str;
default = [ ];
@ -133,6 +160,30 @@ in
'';
};
localSourceAllow = mkOption {
type = types.listOf types.str;
description = ''
Permissions granted for the <option>services.syncoid.user</option> user
for local source datasets. See
<link xlink:href="https://openzfs.github.io/openzfs-docs/man/8/zfs-allow.8.html"/>
for available permissions.
Defaults to <option>services.syncoid.localSourceAllow</option> option.
'';
};
localTargetAllow = mkOption {
type = types.listOf types.str;
description = ''
Permissions granted for the <option>services.syncoid.user</option> user
for local target datasets. See
<link xlink:href="https://openzfs.github.io/openzfs-docs/man/8/zfs-allow.8.html"/>
for available permissions.
Make sure to include the <literal>change-key</literal> permission if you send raw encrypted datasets,
the <literal>compression</literal> permission if you send raw compressed datasets, and so on.
For remote target datasets you'll have to set your remote user permissions by yourself.
'';
};
sendOptions = mkOption {
type = types.separatedString " ";
default = "";
@ -179,6 +230,8 @@ in
config = {
source = mkDefault name;
sshKey = mkDefault cfg.sshKey;
localSourceAllow = mkDefault cfg.localSourceAllow;
localTargetAllow = mkDefault cfg.localTargetAllow;
};
}));
default = { };
@ -221,13 +274,11 @@ in
path = [ "/run/booted-system/sw/bin/" ];
serviceConfig = {
ExecStartPre =
# Permissions snapshot and destroy are in case --no-sync-snap is not used
(map (buildAllowCommand "allow" [ "bookmark" "hold" "send" "snapshot" "destroy" ]) (localDatasetName c.source)) ++
(map (buildAllowCommand "allow" [ "create" "mount" "receive" "rollback" ]) (localDatasetName c.target));
(map (buildAllowCommand "allow" c.localSourceAllow) (localDatasetName c.source)) ++
(map (buildAllowCommand "allow" c.localTargetAllow) (localDatasetName c.target));
ExecStopPost =
# Permissions snapshot and destroy are in case --no-sync-snap is not used
(map (buildAllowCommand "unallow" [ "bookmark" "hold" "send" "snapshot" "destroy" ]) (localDatasetName c.source)) ++
(map (buildAllowCommand "unallow" [ "create" "mount" "receive" "rollback" ]) (localDatasetName c.target));
(map (buildAllowCommand "unallow" c.localSourceAllow) (localDatasetName c.source)) ++
(map (buildAllowCommand "unallow" c.localTargetAllow) (localDatasetName c.target));
ExecStart = lib.escapeShellArgs ([ "${pkgs.sanoid}/bin/syncoid" ]
++ optionals c.useCommonArgs cfg.commonArgs
++ optional c.recursive "-r"