# File lib/thin/daemonizing.rb, line 62 def change_privilege(user, group=user) log ">> Changing process privilege to #{user}:#{group}" uid, gid = Process.euid, Process.egid target_uid = Etc.getpwnam(user).uid target_gid = Etc.getgrnam(group).gid if uid != target_uid || gid != target_gid # Change process ownership Process.initgroups(user, target_gid) Process::GID.change_privilege(target_gid) Process::UID.change_privilege(target_uid) end rescue Errno::EPERM => e log "Couldn't change user and group to #{user}:#{group}: #{e}" end