source: rtems-docs/posix1003_1/process_environment.rst @ 9aafb39

4.115
Last change on this file since 9aafb39 was 489740f, checked in by Chris Johns <chrisj@…>, on 05/20/16 at 02:47:09

Set SPDX License Identifier in each source file.
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1.. comment SPDX-License-Identifier: CC-BY-SA-4.0
2
3Process Environment
4###################
5
6Process Identification
7======================
8
9Get Process and Parent Process IDs
10----------------------------------
11
12.. code:: c
13
14    getpid(), Function, Implemented, SUSP Functionality
15    getppid(), Function, Implemented, SUSP Functionality
16
17User Identification
18===================
19
20Get Real User Effective User Real Group and Effective Group IDs
21---------------------------------------------------------------
22
23.. code:: c
24
25    getuid(), Function, Implemented, SUSP Functionality
26    geteuid(), Function, Implemented, SUSP Functionality
27    getgid(), Function, Implemented, SUSP Functionality
28    getegid(), Function, Implemented, SUSP Functionality
29
30Set User and Group IDs
31----------------------
32
33.. code:: c
34
35    setuid(), Function, Implemented, SUSP Functionality
36    setgid(), Function, Implemented, SUSP Functionality
37
38Get Supplementary Group IDs
39---------------------------
40
41.. code:: c
42
43    getgroups(), Function, Implemented, SUSP Functionality
44
45Get User Name
46-------------
47
48.. code:: c
49
50    getlogin(), Function, Implemented, SUSP Functionality
51    getlogin_r(), Function, Implemented, SUSP Functionality
52
53Process Groups
54==============
55
56Get Process Group ID
57--------------------
58
59.. code:: c
60
61    getpgrp(), Function, Implemented, SUSP Functionality
62
63Create Session and Set Process Group ID
64---------------------------------------
65
66.. code:: c
67
68    setsid(), Function, Implemented, SUSP Functionality
69
70Set Process Group ID for Job Control
71------------------------------------
72
73.. code:: c
74
75    setpgid(), Function, Dummy Implementation
76
77System Identification
78=====================
79
80Get System Name
81---------------
82
83.. code:: c
84
85    struct utsname, Type, Implemented
86    uname(), Function, Implemented
87
88Time
89====
90
91Get System Time
92---------------
93
94.. code:: c
95
96    time(), Function, Implemented
97
98Get Process Times
99-----------------
100
101.. code:: c
102
103    struct tms, Type, Implemented
104    times(), Function, Implemented
105
106NOTE: ``times`` always returns 0 for tms_stime, tms_cutime, and
107tms_cstime fields of the ``struct tms`` returned.
108
109Environment Variables
110=====================
111
112Environment Access
113------------------
114
115.. code:: c
116
117    getenv(), Function, Implemented
118
119Terminal Identification
120=======================
121
122Generate Terminal Pathname
123--------------------------
124
125.. code:: c
126
127    ctermid(), Function, Implemented
128
129Determine Terminal Device Name
130------------------------------
131
132.. code:: c
133
134    ttyname(), Function, Implemented, untested
135    ttyname_r(), Function, Implemented, untested
136    isatty(), Function, Implemented
137
138Configurable System Variables
139=============================
140
141Get Configurable System Variables
142---------------------------------
143
144.. code:: c
145
146    sysconf(), Function, Dummy Implementation
147    _SC_AIO_LISTIO_MAX, Constant, Implemented
148    _SC_AIO_MAX, Constant, Implemented
149    _SC_AIO_PRIO_DELTA_MAX, Constant, Implemented
150    _SC_ARG_MAX, Constant, Implemented
151    _SC_CHILD_MAX, Constant, Implemented
152    _SC_CLK_TCK, Constant, Implemented
153    CLK_TCK, Constant, Implemented
154    _SC_DELAYTIMER_MAX, Constant, Implemented
155    _SC_GETGR_R_SIZE_MAX, Constant, Implemented
156    _SC_GETPW_R_SIZE_MAX, Constant, Implemented
157    _SC_LOGIN_NAME_MAX, Constant, Implemented
158    _SC_MQ_OPEN_MAX, Constant, Implemented
159    _SC_MQ_PRIO_MAX, Constant, Implemented
160    _SC_NGROUPS_MAX, Constant, Implemented
161    _SC_OPEN_MAX, Constant, Implemented
162    _SC_PAGESIZE, Constant, Implemented
163    _SC_RTSIG_MAX, Constant, Implemented
164    _SC_SEM_NSEMS_MAX, Constant, Implemented
165    _SC_SEM_VALUE_MAX, Constant, Implemented
166    _SC_SIGQUEUE_MAX, Constant, Implemented
167    _SC_STREAM_MAX, Constant, Implemented
168    _SC_THREAD_DESTRUCTOR_ITERATIONS, Constant, Implemented
169    _SC_THREAD_KEYS_MAX, Constant, Implemented
170    _SC_THREAD_STACK_MIN, Constant, Implemented
171    _SC_THREAD_THREADS_MAX, Constant, Implemented
172    _SC_TIMER_MAX, Constant, Implemented
173    _SC_TTY_NAME_MAX, Constant, Implemented
174    _SC_TZNAME_MAX, Constant, Implemented
175    _SC_ASYNCHRONOUS_IO, Constant, Implemented
176    _SC_FSYNC, Constant, Implemented
177    _SC_JOB_CONROL, Constant, Implemented
178    _SC_MAPPED_FILES, Constant, Implemented
179    _SC_MEMLOCK, Constant, Implemented
180    _SC_MEMLOCK_RANGE, Constant, Implemented
181    _SC_MEMORY_PROTECTION, Constant, Implemented
182    _SC_MESSAGE_PASSING, Constant, Implemented
183    _SC_PRIORITIZED_IO, Constant, Implemented
184    _SC_PRIORITY_SCHEDULING, Constant, Unimplemented
185    _SC_REALTIME_SIGNALS, Constant, Implemented
186    _SC_SAVED_IDS, Constant, Implemented
187    _SC_SEMAPHORES, Constant, Implemented
188    _SC_SHARED_MEMORY_OBJECTS, Constant, Implemented
189    _SC_SYNCHRONIZED_IO, Constant, Implemented
190    _SC_TIMERS, Constant, Implemented
191    _SC_THREADS, Constant, Implemented
192    _SC_THREAD_ATTR_STACKADDR, Constant, Implemented
193    _SC_THREAD_ATTR_STACKSIZE, Constant, Implemented
194    _SC_THREAD_PRIORITY_SCHEDULING, Constant, Implemented
195    _SC_THREAD_PRIO_INHERIT, Constant, Implemented
196    _SC_THREAD_PRIO_PROTECT, Constant, Unimplemented
197    _SC_THREAD_PROCESS_SHARED, Constant, Implemented
198    _SC_THREAD_SAFE_FUNCTIONS, Constant, Implemented
199    _SC_VERSION, Constant, Implemented
200
201.. COMMENT: COPYRIGHT (c) 1988-2002.
202
203.. COMMENT: On-Line Applications Research Corporation (OAR).
204
205.. COMMENT: All rights reserved.
206
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