.. comment SPDX-License-Identifier: CC-BY-SA-4.0
Process Environment
###################
Process Identification
======================
Get Process and Parent Process IDs
----------------------------------
.. code:: c
getpid(), Function, Implemented, SUSP Functionality
getppid(), Function, Implemented, SUSP Functionality
User Identification
===================
Get Real User Effective User Real Group and Effective Group IDs
---------------------------------------------------------------
.. code:: c
getuid(), Function, Implemented, SUSP Functionality
geteuid(), Function, Implemented, SUSP Functionality
getgid(), Function, Implemented, SUSP Functionality
getegid(), Function, Implemented, SUSP Functionality
Set User and Group IDs
----------------------
.. code:: c
setuid(), Function, Implemented, SUSP Functionality
setgid(), Function, Implemented, SUSP Functionality
Get Supplementary Group IDs
---------------------------
.. code:: c
getgroups(), Function, Implemented, SUSP Functionality
Get User Name
-------------
.. code:: c
getlogin(), Function, Implemented, SUSP Functionality
getlogin_r(), Function, Implemented, SUSP Functionality
Process Groups
==============
Get Process Group ID
--------------------
.. code:: c
getpgrp(), Function, Implemented, SUSP Functionality
Create Session and Set Process Group ID
---------------------------------------
.. code:: c
setsid(), Function, Implemented, SUSP Functionality
Set Process Group ID for Job Control
------------------------------------
.. code:: c
setpgid(), Function, Dummy Implementation
System Identification
=====================
Get System Name
---------------
.. code:: c
struct utsname, Type, Implemented
uname(), Function, Implemented
Time
====
Get System Time
---------------
.. code:: c
time(), Function, Implemented
Get Process Times
-----------------
.. code:: c
struct tms, Type, Implemented
times(), Function, Implemented
NOTE: ``times`` always returns 0 for tms_stime, tms_cutime, and
tms_cstime fields of the ``struct tms`` returned.
Environment Variables
=====================
Environment Access
------------------
.. code:: c
getenv(), Function, Implemented
Terminal Identification
=======================
Generate Terminal Pathname
--------------------------
.. code:: c
ctermid(), Function, Implemented
Determine Terminal Device Name
------------------------------
.. code:: c
ttyname(), Function, Implemented, untested
ttyname_r(), Function, Implemented, untested
isatty(), Function, Implemented
Configurable System Variables
=============================
Get Configurable System Variables
---------------------------------
.. code:: c
sysconf(), Function, Dummy Implementation
_SC_AIO_LISTIO_MAX, Constant, Implemented
_SC_AIO_MAX, Constant, Implemented
_SC_AIO_PRIO_DELTA_MAX, Constant, Implemented
_SC_ARG_MAX, Constant, Implemented
_SC_CHILD_MAX, Constant, Implemented
_SC_CLK_TCK, Constant, Implemented
CLK_TCK, Constant, Implemented
_SC_DELAYTIMER_MAX, Constant, Implemented
_SC_GETGR_R_SIZE_MAX, Constant, Implemented
_SC_GETPW_R_SIZE_MAX, Constant, Implemented
_SC_LOGIN_NAME_MAX, Constant, Implemented
_SC_MQ_OPEN_MAX, Constant, Implemented
_SC_MQ_PRIO_MAX, Constant, Implemented
_SC_NGROUPS_MAX, Constant, Implemented
_SC_OPEN_MAX, Constant, Implemented
_SC_PAGESIZE, Constant, Implemented
_SC_RTSIG_MAX, Constant, Implemented
_SC_SEM_NSEMS_MAX, Constant, Implemented
_SC_SEM_VALUE_MAX, Constant, Implemented
_SC_SIGQUEUE_MAX, Constant, Implemented
_SC_STREAM_MAX, Constant, Implemented
_SC_THREAD_DESTRUCTOR_ITERATIONS, Constant, Implemented
_SC_THREAD_KEYS_MAX, Constant, Implemented
_SC_THREAD_STACK_MIN, Constant, Implemented
_SC_THREAD_THREADS_MAX, Constant, Implemented
_SC_TIMER_MAX, Constant, Implemented
_SC_TTY_NAME_MAX, Constant, Implemented
_SC_TZNAME_MAX, Constant, Implemented
_SC_ASYNCHRONOUS_IO, Constant, Implemented
_SC_FSYNC, Constant, Implemented
_SC_JOB_CONROL, Constant, Implemented
_SC_MAPPED_FILES, Constant, Implemented
_SC_MEMLOCK, Constant, Implemented
_SC_MEMLOCK_RANGE, Constant, Implemented
_SC_MEMORY_PROTECTION, Constant, Implemented
_SC_MESSAGE_PASSING, Constant, Implemented
_SC_PRIORITIZED_IO, Constant, Implemented
_SC_PRIORITY_SCHEDULING, Constant, Unimplemented
_SC_REALTIME_SIGNALS, Constant, Implemented
_SC_SAVED_IDS, Constant, Implemented
_SC_SEMAPHORES, Constant, Implemented
_SC_SHARED_MEMORY_OBJECTS, Constant, Implemented
_SC_SYNCHRONIZED_IO, Constant, Implemented
_SC_TIMERS, Constant, Implemented
_SC_THREADS, Constant, Implemented
_SC_THREAD_ATTR_STACKADDR, Constant, Implemented
_SC_THREAD_ATTR_STACKSIZE, Constant, Implemented
_SC_THREAD_PRIORITY_SCHEDULING, Constant, Implemented
_SC_THREAD_PRIO_INHERIT, Constant, Implemented
_SC_THREAD_PRIO_PROTECT, Constant, Unimplemented
_SC_THREAD_PROCESS_SHARED, Constant, Implemented
_SC_THREAD_SAFE_FUNCTIONS, Constant, Implemented
_SC_VERSION, Constant, Implemented
.. COMMENT: COPYRIGHT (c) 1988-2002.
.. COMMENT: On-Line Applications Research Corporation (OAR).
.. COMMENT: All rights reserved.
