SHM_ALLUSER_MODE
SHM_AUTOCLN_MODE
SHM_DEBUG_LEVEL
SHM_DEFAULT_MODE
shm_err_arg
shm_err_bug
shm_err_ok
shm_err_op
shm_err_ref
SHM_MUSTCLN_MODE
SHM_NAME_MAX
SHM_PRIVATE_MODE
shm_total_errors
SHM_USERGRP_MODE