Function currentUserForGroup

pkgcache/cache_setup.go:598–615

()

}

func currentUserForGroup() (string, error) {
	candidate := os.Getenv("SUDO_USER")
	if candidate == "" {
		candidate = os.Getenv("USER")
	}
	if candidate == "" {
		return "", fmt.Errorf("cannot read current user from environment")
	}

	// Reject root: happens with `sudo su -` (SUDO_USER is cleared) or when the
	// command is run directly as root. Adding root to the celer group is useless
	// (root already bypasses group checks) and hides the real misuse from the user.
	if candidate == "root" {
		return "", fmt.Errorf("cannot determine the invoking non-root user (SUDO_USER and USER both point to root); re-run as: sudo ./celer setup ...")
	}

	return candidate, nil
}

// addCurrentUserToGroup adds the invoking user to the celer group.
// Under sudo this is SUDO_USER; otherwise it falls back to USER.