@c
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@c
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@c COPYRIGHT (c) 1988-2002.
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@c COPYRIGHT (c) 1988-2002.
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@c On-Line Applications Research Corporation (OAR).
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@c On-Line Applications Research Corporation (OAR).
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@c All rights reserved.
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@c All rights reserved.
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@c
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@c
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@c ch06.t,v 1.14 2002/01/17 21:47:45 joel Exp
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@c ch06.t,v 1.14 2002/01/17 21:47:45 joel Exp
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@c
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@c
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@chapter Input and Output Primitives
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@chapter Input and Output Primitives
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@section Pipes
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@section Pipes
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@subsection Create an Inter-Process Channel
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@subsection Create an Inter-Process Channel
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@example
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@example
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pipe(), Function, Dummy Implementation
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pipe(), Function, Dummy Implementation
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@end example
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@end example
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NOTE: pipe() returns ENOSYS.
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NOTE: pipe() returns ENOSYS.
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@section File Descriptor Manipulation
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@section File Descriptor Manipulation
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@subsection Duplicate an Open File Descriptor
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@subsection Duplicate an Open File Descriptor
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@example
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@example
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dup(), Function, Implemented
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dup(), Function, Implemented
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dup2(), Function, Implemented
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dup2(), Function, Implemented
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@end example
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@end example
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@section File Descriptor Deassignment
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@section File Descriptor Deassignment
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@subsection Close a File
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@subsection Close a File
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@example
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@example
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close(), Function, Implemented
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close(), Function, Implemented
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@end example
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@end example
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@section Input and Output
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@section Input and Output
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@subsection Read from a File
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@subsection Read from a File
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@example
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@example
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read(), Function, Implemented
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read(), Function, Implemented
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@end example
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@end example
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@subsection Write to a File
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@subsection Write to a File
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@example
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@example
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write(), Function, Implemented
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write(), Function, Implemented
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@end example
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@end example
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@section Control Operations on Files
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@section Control Operations on Files
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@subsection Data Definitions for File Control Operations
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@subsection Data Definitions for File Control Operations
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@subsection File Control
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@subsection File Control
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@example
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@example
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struct flock, Type, Implemented
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struct flock, Type, Implemented
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fcntl(), Function, Implemented
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fcntl(), Function, Implemented
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F_DUPFD, Constant, Implemented
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F_DUPFD, Constant, Implemented
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F_GETFD, Constant, Implemented
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F_GETFD, Constant, Implemented
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F_GETLK, Constant, Implemented
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F_GETLK, Constant, Implemented
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F_SETFD, Constant, Implemented
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F_SETFD, Constant, Implemented
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F_GETFL, Constant, Implemented
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F_GETFL, Constant, Implemented
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F_SETFL, Constant, Implemented
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F_SETFL, Constant, Implemented
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F_SETLK, Constant, Implemented
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F_SETLK, Constant, Implemented
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F_SETLKW, Constant, Implemented
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F_SETLKW, Constant, Implemented
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FD_CLOEXEC, Constant, Implemented
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FD_CLOEXEC, Constant, Implemented
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F_RDLCK, Constant, Implemented
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F_RDLCK, Constant, Implemented
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F_UNLCK, Constant, Implemented
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F_UNLCK, Constant, Implemented
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F_WRLCK, Constant, Implemented
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F_WRLCK, Constant, Implemented
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O_ACCMODE, Constant, Implemented
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O_ACCMODE, Constant, Implemented
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@end example
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@end example
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NOTE: A number of constants are used by both @code{open} and @code{fcntl}.
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NOTE: A number of constants are used by both @code{open} and @code{fcntl}.
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@code{O_CREAT}, @code{O_EXCL}, @code{O_NOCTTY}, @code{O_TRUNC},
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@code{O_CREAT}, @code{O_EXCL}, @code{O_NOCTTY}, @code{O_TRUNC},
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@code{O_APPEND}, @code{O_DSYNC}, @code{O_NONBLOCK}, @code{O_RSYNC},
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@code{O_APPEND}, @code{O_DSYNC}, @code{O_NONBLOCK}, @code{O_RSYNC},
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@code{O_SYNC}, @code{O_RDONLY}, @code{O_RDWR}, and @code{O_WRONLY}
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@code{O_SYNC}, @code{O_RDONLY}, @code{O_RDWR}, and @code{O_WRONLY}
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are also included in another section. @xref{Open a File}.
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are also included in another section. @xref{Open a File}.
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@subsection Reposition Read/Write File Offset
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@subsection Reposition Read/Write File Offset
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@example
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@example
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lseek(), Function, Implemented
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lseek(), Function, Implemented
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SEEK_SET, Constant, Implemented
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SEEK_SET, Constant, Implemented
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SEEK_CUR, Constant, Implemented
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SEEK_CUR, Constant, Implemented
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SEEK_END, Constant, Implemented
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SEEK_END, Constant, Implemented
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@end example
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@end example
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@section File Synchronization
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@section File Synchronization
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@subsection Synchronize the State of a File
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@subsection Synchronize the State of a File
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@example
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@example
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fsync(), Function, Implemented
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fsync(), Function, Implemented
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@end example
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@end example
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@subsection Synchronize the Data of a File
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@subsection Synchronize the Data of a File
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@example
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@example
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fdatasync(), Function, Implemented
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fdatasync(), Function, Implemented
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@end example
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@end example
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@section Asynchronous Input and Output
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@section Asynchronous Input and Output
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@subsection Data Definitions for Asynchronous Input and Output
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@subsection Data Definitions for Asynchronous Input and Output
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@subsubsection Asynchronous I/O Control Block
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@subsubsection Asynchronous I/O Control Block
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@example
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@example
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struct aiocb, Type, Untested Implementation
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struct aiocb, Type, Untested Implementation
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@end example
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@end example
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@subsubsection Asynchronous I/O Manifest Constants
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@subsubsection Asynchronous I/O Manifest Constants
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@example
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@example
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AIO_CANCELED, Constant, Implemented
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AIO_CANCELED, Constant, Implemented
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AIO_NOTCANCELED, Constant, Implemented
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AIO_NOTCANCELED, Constant, Implemented
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AIO_ALLDONE, Constant, Implemented
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AIO_ALLDONE, Constant, Implemented
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LIO_WAIT, Constant, Implemented
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LIO_WAIT, Constant, Implemented
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LIO_NOWAIT, Constant, Implemented
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LIO_NOWAIT, Constant, Implemented
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LIO_READ, Constant, Implemented
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LIO_READ, Constant, Implemented
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LIO_WRITE, Constant, Implemented
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LIO_WRITE, Constant, Implemented
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LIO_NOP, Constant, Implemented
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LIO_NOP, Constant, Implemented
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@end example
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@end example
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@subsection Asynchronous Read
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@subsection Asynchronous Read
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@example
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@example
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aio_read(), Function, Dummy Implementation
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aio_read(), Function, Dummy Implementation
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@end example
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@end example
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@subsection Asynchronous Write
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@subsection Asynchronous Write
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@example
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@example
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aio_write(), Function, Dummy Implementation
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aio_write(), Function, Dummy Implementation
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@end example
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@end example
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@subsection List Directed I/O
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@subsection List Directed I/O
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@example
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@example
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lio_listio(), Function, Dummy Implementation
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lio_listio(), Function, Dummy Implementation
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@end example
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@end example
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@subsection Retrieve Error Status of Asynchronous I/O Operation
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@subsection Retrieve Error Status of Asynchronous I/O Operation
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@example
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@example
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aio_error(), Function, Dummy Implementation
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aio_error(), Function, Dummy Implementation
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@end example
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@end example
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@subsection Retrieve Return Status of Asynchronous I/O Operation
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@subsection Retrieve Return Status of Asynchronous I/O Operation
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@example
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@example
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aio_return(), Function, Dummy Implementation
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aio_return(), Function, Dummy Implementation
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@end example
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@end example
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@subsection Cancel Asynchronous I/O Request
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@subsection Cancel Asynchronous I/O Request
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@example
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@example
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aio_cancel(), Function, Dummy Implementation
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aio_cancel(), Function, Dummy Implementation
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@end example
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@end example
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@subsection Wait for Asynchronous I/O Request
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@subsection Wait for Asynchronous I/O Request
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@example
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@example
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aio_suspend(), Function, Dummy Implementation
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aio_suspend(), Function, Dummy Implementation
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@end example
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@end example
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@subsection Asynchronous File Synchronization
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@subsection Asynchronous File Synchronization
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@example
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@example
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aio_fsync(), Function, Dummy Implementation
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aio_fsync(), Function, Dummy Implementation
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@end example
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@end example
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