Timmy_Foundation/hermes-agent
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fix(nix): unify directory and file permissions across all three layers (#3619)

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Activation script, tmpfiles, and container entrypoint now agree on
0750 for all directories. Tighten config.yaml and workspace documents
from 0644 to 0640 (group-readable, no world access). Add explicit
chmod for .managed marker and container $TARGET_HOME to eliminate
umask dependence. Secrets (auth.json, .env) remain 0600.
This commit is contained in:
Siddharth Balyan
2026-03-29 05:29:24 +05:30
committed by GitHub
parent 857a5d7b47
commit ffdfeb91d8
1 changed files with 8 additions and 5 deletions
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13
nix/nixosModules.nix
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@@ -111,6 +111,7 @@
fi
mkdir -p "$TARGET_HOME"
chown "$HERMES_UID:$HERMES_GID" "$TARGET_HOME"
chmod 0750 "$TARGET_HOME"
# Ensure HERMES_HOME is owned by the target user
if [ -n "''${HERMES_HOME:-}" ] && [ -d "$HERMES_HOME" ]; then
@@ -551,8 +552,8 @@
# ── Directories ───────────────────────────────────────────────────
{
systemd.tmpfiles.rules = [
"d ${cfg.stateDir} 0755 ${cfg.user} ${cfg.group} - -"
"d ${cfg.stateDir}/.hermes 0755 ${cfg.user} ${cfg.group} - -"
"d ${cfg.stateDir} 0750 ${cfg.user} ${cfg.group} - -"
"d ${cfg.stateDir}/.hermes 0750 ${cfg.user} ${cfg.group} - -"
"d ${cfg.stateDir}/home 0750 ${cfg.user} ${cfg.group} - -"
"d ${cfg.workingDirectory} 0750 ${cfg.user} ${cfg.group} - -"
];
@@ -566,21 +567,23 @@
mkdir -p ${cfg.stateDir}/home
mkdir -p ${cfg.workingDirectory}
chown ${cfg.user}:${cfg.group} ${cfg.stateDir} ${cfg.stateDir}/.hermes ${cfg.stateDir}/home ${cfg.workingDirectory}
chmod 0750 ${cfg.stateDir} ${cfg.stateDir}/.hermes ${cfg.stateDir}/home ${cfg.workingDirectory}
# Merge Nix settings into existing config.yaml.
# Preserves user-added keys (skills, streaming, etc.); Nix keys win.
# If configFile is user-provided (not generated), overwrite instead of merge.
${if cfg.configFile != null then ''
install -o ${cfg.user} -g ${cfg.group} -m 0644 -D ${configFile} ${cfg.stateDir}/.hermes/config.yaml
install -o ${cfg.user} -g ${cfg.group} -m 0640 -D ${configFile} ${cfg.stateDir}/.hermes/config.yaml
'' else ''
${configMergeScript} ${generatedConfigFile} ${cfg.stateDir}/.hermes/config.yaml
chown ${cfg.user}:${cfg.group} ${cfg.stateDir}/.hermes/config.yaml
chmod 0644 ${cfg.stateDir}/.hermes/config.yaml
chmod 0640 ${cfg.stateDir}/.hermes/config.yaml
''}
# Managed mode marker (so interactive shells also detect NixOS management)
touch ${cfg.stateDir}/.hermes/.managed
chown ${cfg.user}:${cfg.group} ${cfg.stateDir}/.hermes/.managed
chmod 0644 ${cfg.stateDir}/.hermes/.managed
# Seed auth file if provided
${lib.optionalString (cfg.authFile != null) ''
@@ -612,7 +615,7 @@ HERMES_NIX_ENV_EOF
# Link documents into workspace
${lib.concatStringsSep "\n" (lib.mapAttrsToList (name: _value: ''
install -o ${cfg.user} -g ${cfg.group} -m 0644 ${documentDerivation}/${name} ${cfg.workingDirectory}/${name}
install -o ${cfg.user} -g ${cfg.group} -m 0640 ${documentDerivation}/${name} ${cfg.workingDirectory}/${name}
'') cfg.documents)}
'';
}