Content-type: text/html Man page of fdatasync

fdatasync

Section: Realtime Library Functions (3RT)
Updated: 28 Jun 2002
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NAME

fdatasync - synchronize a file's data  

SYNOPSIS

cc [ flag... ] file... -lrt [ library... ]
#include <unistd.h>

int fdatasync(int fildes);  

DESCRIPTION

The fdatasync() function forces all currently queued I/O operations associated with the file indicated by file descriptor fildes to the synchronized I/O completion state.

The functionality is as described for fsync(3C) (with the symbol _XOPEN_REALTIME defined), with the exception that all I/O operations are completed as defined for synchronised I/O data integrity completion.  

RETURN VALUES

If successful, the fdatasync() function returns 0. Otherwise, the function returns -1 and sets errno to indicate the error. If the fdatasync() function fails, outstanding I/O operations are not guaranteed to have been completed.  

ERRORS

The fdatasync() function will fail if:

EBADF The fildes argument is not a valid file descriptor open for writing.

EINVAL The system does not support synchronized I/O for this file.

ENOSYS The function fdatasync() is not supported by the system.

In the event that any of the queued I/O operations fail, fdatasync() returns the error conditions defined for read(2) and write(2).  

ATTRIBUTES

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPEATTRIBUTE VALUE
Interface StabilityStandard
MT-LevelAsync-Signal-Safe

 

SEE ALSO

fcntl(2), open(2), read(2), write(2), fsync(3C), aio_fsync(3RT), fcntl.h(3HEAD), attributes(5), standards(5)


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUES
ERRORS
ATTRIBUTES
SEE ALSO

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Time: 02:39:04 GMT, October 02, 2010