.. comment SPDX-License-Identifier: CC-BY-SA-4.0
Terminology and General Requirements
####################################
Conventions
===========
Definitions
===========
General Concepts
================
Error Numbers
=============
.. code:: c
E2BIG, Constant, Implemented
EACCES, Constant, Implemented
EAGAIN, Constant, Implemented
EBADF, Constant, Implemented
EBADMSG, Constant, Implemented
EBUSY, Constant, Implemented
ECANCELED, Constant, Unimplemented
ECHILD, Constant, Implemented
EDEADLK, Constant, Implemented
EDOM, Constant, Implemented
EEXIST, Constant, Implemented
EFAULT, Constant, Implemented
EFBIG, Constant, Implemented
EINPROGRESS, Constant, Implemented
EINTR, Constant, Implemented
EINVAL, Constant, Implemented
EIO, Constant, Implemented
EISDIR, Constant, Implemented
EMFILE, Constant, Implemented
EMLINK, Constant, Implemented
EMSGSIZE, Constant, Implemented
ENAMETOOLONG, Constant, Implemented
ENFILE, Constant, Implemented
ENODEV, Constant, Implemented
ENOENT, Constant, Implemented
ENOEXEC, Constant, Implemented
ENOLCK, Constant, Implemented
ENOMEM, Constant, Implemented
ENOSPC, Constant, Implemented
ENOSYS, Constant, Implemented
ENOTDIR, Constant, Implemented
ENOTEMPTY, Constant, Implemented
ENOTSUP, Constant, Implemented
ENOTTY, Constant, Implemented
ENXIO, Constant, Implemented
EPERM, Constant, Implemented
EPIPE, Constant, Implemented
ERANGE, Constant, Implemented
EROFS, Constant, Implemented
ESPIPE, Constant, Implemented
ESRCH, Constant, Implemented
ETIMEDOUT, Constant, Implemented
EXDEV, Constant, Implemented
Primitive System Types
======================
.. code:: c
dev_t, Type, Implemented
gid_t, Type, Implemented
ino_t, Type, Implemented
mode_t, Type, Implemented
nlink_t, Type, Implemented
off_t, Type, Implemented
pid_t, Type, Implemented
pthread_t, Type, Implemented
pthread_attr_t, Type, Implemented
pthread_mutex_t, Type, Implemented
pthread_mutex_attr_t, Type, Implemented
pthread_cond_t, Type, Implemented
pthread_cond_attr_t, Type, Implemented
pthread_key_t, Type, Implemented
pthread_once_t, Type, Implemented
size_t, Type, Implemented
ssize_t, Type, Implemented
time_t, Type, Implemented
uid_t, Type, Implemented
NOTE: time_t is not listed in this section but is used by many functions.
Environment Description
=======================
C Language Definitions
======================
Symbols From the C Standard
---------------------------
.. code:: c
NULL, Constant, Implemented
POSIX.1 Symbols
---------------
.. code:: c
_POSIX_C_SOURCE, Feature Flag,
Numerical Limits
================
C Language Limits
=================
.. code:: c
CHAR_BIT, Constant, Implemented
CHAR_MAX, Constant, Implemented
CHAR_MIN, Constant, Implemented
INT_MAX, Constant, Implemented
INT_MIN, Constant, Implemented
LONG_MAX, Constant, Implemented
LONG_MIN, Constant, Implemented
MB_LEN_MAX, Constant, Implemented
SCHAR_MAX, Constant, Implemented
SCHAR_MIN, Constant, Implemented
SHRT_MAX, Constant, Implemented
SHRT_MIN, Constant, Implemented
UCHAR_MAX, Constant, Implemented
UINT_MAX, Constant, Implemented
ULONG_MAX, Constant, Implemented
USHRT_MAX, Constant, Implemented
NOTE: These are implemented in GCC's limits.h file.
Minimum Values
--------------
.. code:: c
_POSIX_AIO_LISTIO_MAX, Constant, Implemented
_POSIX_AIO_MAX, Constant, Implemented
_POSIX_ARG_MAX, Constant, Implemented
_POSIX_CHILD_MAX, Constant, Implemented
_POSIX_DELAYTIMER_MAX, Constant, Implemented
_POSIX_LINK_MAX, Constant, Implemented
_POSIX_LOGIN_NAME_MAX, Constant, Implemented
_POSIX_MAX_CANON, Constant, Implemented
_POSIX_MAX_INPUT, Constant, Implemented
_POSIX_MQ_OPEN_MAX, Constant, Implemented
_POSIX_MQ_PRIO_MAX, Constant, Implemented
_POSIX_NAME_MAX, Constant, Implemented
_POSIX_NGROUPS_MAX, Constant, Implemented
_POSIX_OPEN_MAX, Constant, Implemented
_POSIX_PATH_MAX, Constant, Implemented
_POSIX_PIPE_BUF, Constant, Implemented
_POSIX_RTSIG_MAX, Constant, Implemented
_POSIX_SEM_NSEMS_MAX, Constant, Implemented
_POSIX_SEM_VALUE_MAX, Constant, Implemented
_POSIX_SIGQUEUE_MAX, Constant, Implemented
_POSIX_SSIZE_MAX, Constant, Implemented
_POSIX_STREAM_MAX, Constant, Implemented
_POSIX_THREAD_DESTRUCTOR_ITERATIONS, Constant, Implemented
_POSIX_THREAD_KEYS_MAX, Constant, Implemented
_POSIX_THREAD_THREADS_MAX, Constant, Implemented
_POSIX_TTY_NAME_MAX, Constant, Implemented
_POSIX_TIME_MAX, Constant, Unimplemented
_POSIX_TZNAME_MAX, Constant, Implemented
Run-Time Increasable Values
---------------------------
.. code:: c
_POSIX_NGROUPS_MAX, Constant, Implemented
Run-Time Invariant Values (Possible Indeterminate)
--------------------------------------------------
.. code:: c
AIO_LISTIO_MAX, Constant, Implemented
AIO_MAX, Constant, Implemented
AIO_PRIO_DELTA_MAX, Constant, Implemented
ARG_MAX, Constant, Implemented
CHILD_MAX, Constant, Implemented
DELAYTIMER_MAX, Constant, Implemented
LOGIN_NAME_MAX, Constant, Implemented
MQ_OPEN_MAX, Constant, Implemented
OPEN_MAX, Constant, Implemented
PAGESIZE, Constant, Implemented
PTHREAD_DESTRUCTOR_ITERATIONS, Constant, Implemented
PTHREAD_KEYS_MAX, Constant, Implemented
PTHREAD_STACK_MIN, Constant, Implemented
PTHJREAD_THREADS_MAX, Constant, Implemented
RTSIG_MAX, Constant, Implemented
SEM_NSEMS_MAX, Constant, Implemented
SEM_VALUE_MAX, Constant, Implemented
SIGQUEUE_MAX, Constant, Implemented
STREAM_MAX, Constant, Implemented
TIMER_MAX, Constant, Implemented
TTY_NAME_MAX, Constant, Implemented
TZNAME_MAX, Constant, Implemented
Pathname Variable Values
------------------------
.. code:: c
LINK_MAX, Constant, Implemented
MAX_CANON, Constant, Implemented
MAX_INPUT, Constant, Implemented
NAME_MAX, Constant, Implemented
PATH_MAX, Constant, Implemented
PIPE_BUF, Constant, Implemented
Invariant Values
----------------
.. code:: c
SSIZE_MAX, Constant, Implemented
Maximum Values
--------------
.. code:: c
_POSIX_CLOCKRES_MIN, Constant, Implemented
Symbolic Constants
==================
Symbolic Constants for the access Function
------------------------------------------
.. code:: c
R_OK, Constant, Implemented
W_OK, Constant, Implemented
X_OK, Constant, Implemented
F_OK, Constant, Implemented
Symbolic Constants for the lseek Function
-----------------------------------------
.. code:: c
SEEK_SET, Constant, Implemented
SEEK_CUR, Constant, Implemented
SEEK_END, Constant, Implemented
Compile-Time Symbolic Constants for Portability Specifications
--------------------------------------------------------------
.. code:: c
_POSIX_ASYNCHRONOUS_IO, Feature Flag,
_POSIX_FSYNC, Feature Flag,
_POSIX_JOB_CONTROL, Feature Flag,
_POSIX_MAPPED_FILES, Feature Flag,
_POSIX_MEMLOCK, Feature Flag,
_POSIX_MEMLOCK_RANGE, Feature Flag,
_POSIX_MEMORY_PROTECTION, Feature Flag,
_POSIX_MESSAGE_PASSING, Feature Flag,
_POSIX_PRIORITIZED_IO, Feature Flag,
_POSIX_PRIORITY_SCHEDULING, Feature Flag,
_POSIX_REALTIME_SIGNALS, Feature Flag,
_POSIX_SAVED_IDS, Feature Flag,
_POSIX_SEMAPHORES, Feature Flag,
_POSIX_SHARED_MEMORY_OBJECTS, Feature Flag,
_POSIX_SYNCHRONIZED_IO, Feature Flag,
_POSIX_THREADS, Feature Flag,
_POSIX_THREAD_ATTR_STACKADDR, Feature Flag,
_POSIX_THREAD_ATTR_STACKSIZE, Feature Flag,
_POSIX_THREAD_PRIORITY_SCHEDULING, Feature Flag,
_POSIX_THREAD_PRIO_INHERIT, Feature Flag,
_POSIX_THREAD_PRIO_CEILING, Feature Flag,
_POSIX_THREAD_PROCESS_SHARED, Feature Flag,
_POSIX_THREAD_SAFE_FUNCTIONS, Feature Flag,
_POSIX_TIMERS, Feature Flag,
_POSIX_VERSION, Feature Flag,
Execution-Time Symbolic Constants for Portability Specifications
----------------------------------------------------------------
.. code:: c
_POSIX_ASYNC_IO, Feature Flag,
_POSIX_CHOWN_RESTRICTED, Feature Flag,
_POSIX_NO_TRUNC, Feature Flag,
_POSIX_PRIO_IO, Feature Flag,
_POSIX_SYNC_IO, Feature Flag,
_POSIX_VDISABLE, Feature Flag,
.. COMMENT: COPYRIGHT (c) 1988-2002.
.. COMMENT: On-Line Applications Research Corporation (OAR).
.. COMMENT: All rights reserved.