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.. comment SPDX-License-Identifier: CC-BY-SA-4.0
Input and Output Primitives
###########################
Pipes
=====
Create an Inter-Process Channel
-------------------------------
.. code:: c
pipe(), Function, Dummy Implementation
NOTE: pipe() returns ENOSYS.
File Descriptor Manipulation
============================
Duplicate an Open File Descriptor
---------------------------------
.. code:: c
dup(), Function, Implemented
dup2(), Function, Implemented
File Descriptor Deassignment
============================
Close a File
------------
.. code:: c
close(), Function, Implemented
Input and Output
================
Read from a File
----------------
.. code:: c
read(), Function, Implemented
Write to a File
---------------
.. code:: c
write(), Function, Implemented
Control Operations on Files
===========================
Data Definitions for File Control Operations
--------------------------------------------
File Control
------------
.. code:: c
struct flock, Type, Implemented
fcntl(), Function, Implemented
F_DUPFD, Constant, Implemented
F_GETFD, Constant, Implemented
F_GETLK, Constant, Implemented
F_SETFD, Constant, Implemented
F_GETFL, Constant, Implemented
F_SETFL, Constant, Implemented
F_SETLK, Constant, Implemented
F_SETLKW, Constant, Implemented
FD_CLOEXEC, Constant, Implemented
F_RDLCK, Constant, Implemented
F_UNLCK, Constant, Implemented
F_WRLCK, Constant, Implemented
O_ACCMODE, Constant, Implemented
NOTE: A number of constants are used by both ``open`` and ``fcntl``.``O_CREAT``, ``O_EXCL``, ``O_NOCTTY``, ``O_TRUNC``,``O_APPEND``, ``O_DSYNC``, ``O_NONBLOCK``, ``O_RSYNC``,``O_SYNC``, ``O_RDONLY``, ``O_RDWR``, and ``O_WRONLY``
are also included in another section. See `Open a File`_.
Reposition Read/Write File Offset
---------------------------------
.. code:: c
lseek(), Function, Implemented
SEEK_SET, Constant, Implemented
SEEK_CUR, Constant, Implemented
SEEK_END, Constant, Implemented
File Synchronization
====================
Synchronize the State of a File
-------------------------------
.. code:: c
fsync(), Function, Implemented
Synchronize the Data of a File
------------------------------
.. code:: c
fdatasync(), Function, Implemented
Asynchronous Input and Output
=============================
Data Definitions for Asynchronous Input and Output
--------------------------------------------------
Asynchronous I/O Control Block
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.. code:: c
struct aiocb, Type, Untested Implementation
Asynchronous I/O Manifest Constants
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.. code:: c
AIO_CANCELED, Constant, Implemented
AIO_NOTCANCELED, Constant, Implemented
AIO_ALLDONE, Constant, Implemented
LIO_WAIT, Constant, Implemented
LIO_NOWAIT, Constant, Implemented
LIO_READ, Constant, Implemented
LIO_WRITE, Constant, Implemented
LIO_NOP, Constant, Implemented
Asynchronous Read
-----------------
.. code:: c
aio_read(), Function, Dummy Implementation
Asynchronous Write
------------------
.. code:: c
aio_write(), Function, Dummy Implementation
List Directed I/O
-----------------
.. code:: c
lio_listio(), Function, Dummy Implementation
Retrieve Error Status of Asynchronous I/O Operation
---------------------------------------------------
.. code:: c
aio_error(), Function, Dummy Implementation
Retrieve Return Status of Asynchronous I/O Operation
----------------------------------------------------
.. code:: c
aio_return(), Function, Dummy Implementation
Cancel Asynchronous I/O Request
-------------------------------
.. code:: c
aio_cancel(), Function, Dummy Implementation
Wait for Asynchronous I/O Request
---------------------------------
.. code:: c
aio_suspend(), Function, Dummy Implementation
Asynchronous File Synchronization
---------------------------------
.. code:: c
aio_fsync(), Function, Dummy Implementation
.. COMMENT: COPYRIGHT (c) 1988-2002.
.. COMMENT: On-Line Applications Research Corporation (OAR).
.. COMMENT: All rights reserved.
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