// +build !windows

package main

import (
    "syscall"
)

func DropPrivileges() error {
    var err error

    if !_ConfigMeta.IsDefined("runoptions", "uid") {
        // not found, no dropping privileges but no err
        return nil
    }

    if !_ConfigMeta.IsDefined("runoptions", "gid") {
        return MsgError("GID must be specified for dropping privileges")
    }

    INFO("Switching to user: %d.%d", _Config.RunOptions.Uid, _Config.RunOptions.Gid)

    if err = syscall.Setgid(_Config.RunOptions.Gid); err != nil {
        return MsgError("setgid: %s", err.Error())
    }

    if err = syscall.Setuid(_Config.RunOptions.Uid); err != nil {
        return MsgError("setuid: %s", err.Error())
    }

    return nil
}