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@c
@c COPYRIGHT (c) 1988-2002.
@c On-Line Applications Research Corporation (OAR).
@c All rights reserved.
@c
@c $Id$
@c
@chapter Input and Output Primitives
@section Pipes
@subsection Create an Inter-Process Channel
@example
pipe(), Function, Dummy Implementation
@end example
NOTE: pipe() returns ENOSYS.
@section File Descriptor Manipulation
@subsection Duplicate an Open File Descriptor
@example
dup(), Function, Implemented
dup2(), Function, Implemented
@end example
@section File Descriptor Deassignment
@subsection Close a File
@example
close(), Function, Implemented
@end example
@section Input and Output
@subsection Read from a File
@example
read(), Function, Implemented
@end example
@subsection Write to a File
@example
write(), Function, Implemented
@end example
@section Control Operations on Files
@subsection Data Definitions for File Control Operations
@subsection File Control
@example
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
@end example
NOTE: A number of constants are used by both @code{open} and @code{fcntl}.
@code{O_CREAT}, @code{O_EXCL}, @code{O_NOCTTY}, @code{O_TRUNC},
@code{O_APPEND}, @code{O_DSYNC}, @code{O_NONBLOCK}, @code{O_RSYNC},
@code{O_SYNC}, @code{O_RDONLY}, @code{O_RDWR}, and @code{O_WRONLY}
are also included in another section. @xref{Open a File}.
@subsection Reposition Read/Write File Offset
@example
lseek(), Function, Implemented
SEEK_SET, Constant, Implemented
SEEK_CUR, Constant, Implemented
SEEK_END, Constant, Implemented
@end example
@section File Synchronization
@subsection Synchronize the State of a File
@example
fsync(), Function, Implemented
@end example
@subsection Synchronize the Data of a File
@example
fdatasync(), Function, Implemented
@end example
@section Asynchronous Input and Output
@subsection Data Definitions for Asynchronous Input and Output
@subsubsection Asynchronous I/O Control Block
@example
struct aiocb, Type, Untested Implementation
@end example
@subsubsection Asynchronous I/O Manifest Constants
@example
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
@end example
@subsection Asynchronous Read
@example
aio_read(), Function, Dummy Implementation
@end example
@subsection Asynchronous Write
@example
aio_write(), Function, Dummy Implementation
@end example
@subsection List Directed I/O
@example
lio_listio(), Function, Dummy Implementation
@end example
@subsection Retrieve Error Status of Asynchronous I/O Operation
@example
aio_error(), Function, Dummy Implementation
@end example
@subsection Retrieve Return Status of Asynchronous I/O Operation
@example
aio_return(), Function, Dummy Implementation
@end example
@subsection Cancel Asynchronous I/O Request
@example
aio_cancel(), Function, Dummy Implementation
@end example
@subsection Wait for Asynchronous I/O Request
@example
aio_suspend(), Function, Dummy Implementation
@end example
@subsection Asynchronous File Synchronization
@example
aio_fsync(), Function, Dummy Implementation
@end example
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